This illustrated encyclopedia provides definitive coverage of all the social and cultural developments of the period as well as its political and economic history.

Table of Contents

• Introduction: The Gilded Age and Progressive Era: 1877–1919
• A
• Abbott, Edith, and Grace Abbott
• Adams, Brooks (1848–1927)
• Adams, Charles Francis (1807–1886)
• Adams, Henry (1838–1918)
• Adamson Eight-Hour Act (1916)
• Addams, Jane (1860–1935)
• Adler, Felix (1851–1933)
• African Americans
• Aldrich, Nelson Wilmarth (1841–1915)
• Aldrich, Thomas Bailey (1836–1907)
• Aldrich-Vreeland Currency Act (1908)
• Alger, Horatio (1832–1899)
• Alien Land Law (1913)
• Alliance Movement
• Allison, William B. (1829–1908)
• Altgeld, John Peter (1847–1902)
• American Association for Labor Legislation
• American Association of University Professors
• American Association of University Women
• American Civil Liberties Union
• American Federation of Labor
• American Forestry Association
• American Free Trade League
• American Indians
• American Protective Association
• American Red Cross
• American Social Science Association
• American Society for Municipal Improvements
• American Society of Equity
• Americanization
• Amusement Parks
• Anarchists
• Anderson, Sherwood (1876–1941)
• Angell, George T. (1823–1909)
• Animal Protection
• Anthony, Susan B. (1820–1906)
• Anthracite Coal Strike of 1902
• Anti-Catholicism
• Anti-Imperialist League
• Anti-Monopoly Parties
• Anti-Saloon League
• Anti-Semitism
• Antismoking Movement
• Antitrust Legislation
• Anti-Unionism
• Antivice Crusades
• Armory Show (1913)
• Armour, Philip D. (1832–1901)
• Arthur, Chester A. (1830–1886)
• Art and Architecture
• Arts and Crafts Movement
• Asian Americans
• Atlanta Compromise (1895)
• Atlantic Monthly, The
• Australian Ballot
• Automobile
• Aviation
• Azusa Street Revival (1906–1909)
• B
• Back to Africa Movement
• Back to the Farm Movement
• Bailey, Liberty Hyde (1858–1954)
• Bailey v. Drexel Furniture Company (1922)
• Baker, Newton D. (1871–1937)
• Baker, Ray Stannard (1870–1946)
• Balch, Emily Greene (1867–1961)
• Ballinger-Pinchot Controversy
• Barnum, Phineas T. (1810–1891)
• Baruch, Bernard Mannes (1870–1965)
• Baseball
• Basketball
• Baum, L. Frank (1856–1919)
• Beard, Charles Austin (1874–1948)
• Bell, Alexander Graham (1847–1922)
• Bellamy, Edward (1850–1898)
• Berger, Victor (1860–1929), and Meta Berger (1873–1944)
• Bergh, Henry (1811–1888)
• Beveridge, Albert Jeremiah (1862–1927)
• Bierce, Ambrose (1842-c. 1913)
• Birth of a Nation (1915)
• Black Elk (c. 1863-1950)
• Black Sox Scandal
• Blaine, James G. (1830–1893)
• Blanc, Marie-Therese (Theodore Bentzon; 1840-1907)
• Bland-Allison Act (1878)
• Blatch, Harriot Stanton (1856–1940)
• Bliss, William D.P. (1856–1926)
• Bly, Nellie (1867–1922)
• Boas, Franz (1858–1942)
• Bok, Edward William (1863–1930)
• Bonnin, Gertrude (1876–1938)
• Borah, William E. (1865–1940)
• Boston Police Strike (1919)
• Bourbons
• Bourne, Randolph (1886–1918)
• Boxer Rebellion (1900)
• Boy Scouts of America
• Brady, “Diamond Jim” (1856–1917)
• Brandeis, Louis Dembitz (1856–1941)
• Breckenridge, Madeline McDowell (1872–1920)
• Breckenridge, Sophonisba (1866–1948)
• Brisbane, Arthur (1864–1936)
• Brooklyn Bridge
• Brooks, Van Wyck (1886–1963)
• Brown, Olympia (1835–1926)
• Brownsville Affair (1906)
• Brushaber v. Union Pacific Railroad Company (1916)
• Bryan, William Jennings (1860–1925)
• Bryce, James (1838–1922)
• Buffalo Soldiers
• Bunting v. Oregon (1917)
• Burbank, Luther (1849–1926)
• Bureau of Corporations, United States
• Bureau of Municipal Research
• Burleson, Albert Sidney (1863–1937)
• Burnham, Daniel Hudson (1846–1912)
• Burns, Lucy (1879–1966)
• Butler, Nicholas Murray (1862–1947)
• C
• Cable, George Washington (1844–1925)
• Cahan, Abraham (1860–1951)
• Camp, Walter (1859–1925)
• Canadian Reciprocity
• Cannon, Joseph G. (1836–1926)
• Carnegie, Andrew (1835–1919)
• Carver, George Washington (1864 or 1865-1943)
• Cassatt, Mary (1844–1926)
• Cather, Willa (1873–1947)
• Catt, Carrie Chapman (1859–1947)
• Cattell, James McKeen (1860–1944)
• Chain Stores
• Chandler, William E. (1835–1917)
• Chaplin, Charles (1889–1977)
• Charity Organization Societies
• Chautauqua Movement
• Chicago School of Sociology
• Child Labor Legislation
• Child Saving
• Children and Youth
• Children's Bureau, United States
• Childs, Richard S. (1882–1978)
• Chinese Exclusion Act (1882)
• Churchill, Winston (1871–1947)
• Circuses
• City Beautiful
• City Manager
• City Planning
• Civil Rights Cases (1883)
• Civil Service Reform
• Clark, James Beauchamp “Champ” (1850–1921)
• Clark, John Bates (1847–1938)
• Clay, Laura (1849–1941)
• Cleveland, Grover (1837–1908)
• Coal Mining Safety Legislation
• Cobb, Tyrus Raymond (1886–1961)
• Cochise (1812–1874)
• Cody, William Frederick “Buffalo Bill” (1846–1917)
• Colby, Clara Bewick (1846–1916)
• Collective Bargaining
• Colored Farmers' Alliance
• Columbian Exposition (1893)
• Commission Form of Municipal Government
• Commission on Country Life
• Commission on Industrial Relations
• Commission on Interracial Cooperation
• Committee on Public Information
• Commons, John R. (1862–1945)
• Compromise of 1877
• Comstock, Anthony (1844–1915)
• Conkling, Roscoe (1829–1888)
• Conscientious Objectors
• Conservation
• Constitutional Amendments
• Contract Labor
• Convict Lease System
• Cooke, Jay (1821–1905)
• Cooley, Charles Horton (1864–1929)
• Cooling-Off Treaties
• Cooper, Peter (1791–1883)
• Cooperative Movement
• Corbett, James (1866–1933)
• Corliss Engine
• Corporation Excise Tax Act (1909)
• Corrupt Practices Laws
• Cotton Futures Act (1914)
• Council of National Defense
• Country Life Movement
• Cox, James Middleton (1870–1957)
• Coxey, Jacob S. (1854–1951)
• Crane, Caroline Bartlett (1858–1935)
• Crane, Stephen (1871–1900)
• Crazy Horse (c. 1842-1877)
• Creel, George (1876–1953)
• Cripple Creek Strike (1903–1904)
• Crisis, The
• Croker, Richard (1841–1922)
• Croly, Herbert (1869–1930)
• Cummins, Albert Baird (1850–1926)
• D
• Dana, Charles Anderson (1819–1897)
• Daniels, Josephus (1862–1948)
• Darrow, Clarence S. (1857–1938)
• Darwinism
• Davis, Richard Harding (1864–1916)
• Dawes, Henry Laurens (1816–1903)
• Dawes Severalty Act (1887)
• De Forest, Lee (1873–1961)
• De Leon, Daniel (1852–1914)
• DeBernardi, Giovanni Battista (1831–1901)
• Debs, Eugene V. (1855–1926)
• Dell, Floyd (1887–1969)
• Department of Commerce and Labor
• Department Stores
• Depression of the 1890s
• Dewey, John (1859–1952)
• Dewey, Melvil (1851–1931)
• DeWitt, Benjamin Parke (1889–1965)
• Disfranchisement
• Divorce
• Dixon, Thomas, Jr. (1864–1946)
• Dodd, William Edward (1869–1940)
• Dollar Diplomacy
• Donnelly, Ignatius (1831–1901)
• Dorr, Rheta Childe (1866–1948)
• Douglass, Frederick (1818–1895)
• Dowie, John Alexander (1847–1907)
• Dreier, Mary Elizabeth (1875–1963)
• Dreiser, Theodore (1871–1945)
• Du Bois, W.E.B. (1868–1963)
• Duke, James Buchanan (1856–1925)
• Dunbar, Paul Laurence (1872–1906)
• Dunne, Edward F. (1853–1937)
• Dunne, Finley Peter (1867–1936)
• Durant, William C. (1861–1947)
• E
• Eastman, Charles Alexander (Ohiyesa; 1858-1939)
• Eastman, Crystal (1881–1928)
• Eastman, George (1854–1932)
• Eastman, Max (1883–1969)
• The Economy
• Eddy, Mary Baker (1821–1910)
• Edison, Thomas Alva (1847–1931)
• Education
• Efficiency
• Eight-Hour Workday
• Einstein, Albert (1879–1955)
• Election of 1876
• Election of 1880
• Election of 1884
• Election of 1888
• Election of 1892
• Election of 1896
• Election of 1900
• Election of 1904
• Election of 1908
• Election of 1912
• Election of 1916
• Election of 1920
• Elections, At-Large
• Elections, Nonpartisan
• Elections, Primary
• Eliot, Charles W. (1834–1926)
• Elkins Act (1903)
• Ely, Richard T. (1854–1943)
• Espionage Act (1917)
• Eugenics
• Everybody's Magazine
• F
• Fairbanks, Charles W. (1852–1918)
• Farmers' Union
• Federal Aid Road Act (1916)
• Federal Council of the Churches of Christ in America
• Federal Farm Loan Act (1916)
• Federal Reserve Act (1913)
• Federal Trade Commission
• Field, Marshall (1835–1906)
• Field, Stephen J. (1816–1899)
• Filene, Edward Albert (1860–1937)
• Fisher, Dorothy Canfield (1879–1958)
• Fisher, Irving (1867–1947)
• Flint v. Stone Tracy Company (1911)
• Flower, B.O. (1858–1918)
• Folk, Joseph Wingate (1869–1923)
• Food Administration, United States
• Football
• Ford, Henry (1863–1947)
• Ford, Henry Jones (1851–1925)
• Foreign and International Relations
• Forest Service, United States
• Fortune, T. Thomas (1856–1928)
• Foundations
• Frank, Leo Max (1884–1915)
• Freud, Sigmund (1856–1939)
• Freund, Ernst (1864–1932)
• Frick, Henry Clay (1849–1919)
• Frost, Robert (1874–1963)
• Fuel Administration
• Fundamentalism
• G
• Gale, Zona (1874–1938)
• Galveston Hurricane (1900)
• Garden City Movement
• Garfield, James A. (1831–1881)
• Garfield, James R. (1865–1950)
• Garland, Hamlin (1860–1940)
• Garner, John Nance (1868–1967)
• Garvey, Marcus (1887–1940)
• Gary, Elbert H. (1846–1927)
• Gary Plan
• Gaston, Lucy (1860–1924)
• General Federation of Women's Clubs
• General Slocum
• Gentlemen's Agreement (1908)
• George, Henry (1839–1897)
• Geronimo (1829–1909)
• Gerry, Elbridge T., III (1837–1927)
• Ghost Dance
• Gibbons, James (1834–1921)
• Gibbs, Josiah Willard (1839–1903)
• Gilman, Charlotte Perkins (1860–1935)
• Gilman, Daniel Coit (1831–1908)
• Girl Scouts of America
• Gladden, Washington (1836–1918)
• Glass, Carter (1858–1946)
• Godkin, Edwin L. (1831–1902)
• Goldman, Emma (1869–1940)
• Goldmark, Josephine Clara (1877–1950)
• Gompers, Samuel (1850–1924)
• Gompers v. Buck's Stove and Range Company (1911)
• Good Roads Movement
• Goodnow, Frank Johnson (1859–1939)
• Gospel of Wealth
• Gould, Jay (1836–1892)
• Government
• Grand Army of the Republic
• Granger Laws
• Grant, Madison (1865–1937)
• Great Strike of 1877
• Greenback Party
• Griffith, David Wark (1875–1948)
• H
• Haley, Margaret A. (1861–1939)
• Hall, G. Stanley (1844–1924)
• Hall, Prescott Farnsworth (1868–1921)
• Hamilton, Alice (1869–1970)
• Hammer v. Dagenhart (1918)
• Hancock, Winfield Scott (1824–1886)
• Handy, W.C. (1873–1958)
• Hanna, Marcus Alonzo (1837–1904)
• Hard, William (1878–1962)
• Harding, Warren G. (1865–1923)
• Harlan, John Marshall (1833–1911)
• Harmon, Judson (1846–1927)
• Harper, Ida Husted (1851–1931)
• Harper, William Rainey (1856–1906)
• Harper's Weekly
• Harriman, Edward Henry (1848–1909)
• Harriman, W. Averell (1891–1986)
• Harris, Joel Chandler (1848–1908)
• Harris, William Torrey (1835–1909)
• Harrison, Benjamin (1833–1901)
• Harrison, Carter Henry, I (1825–1893), and Carter Henry Harrison II (1860–1953)
• Harvey, George (1864–1928)
• Hawaiian Annexation (1898)
• Hay, John (1838–1905)
• Hayes, Rutherford B. (1822–1893)
• Haymarket Affair (1886)
• Haywood, William Dudley (1869–1928)
• Health Insurance Legislation
• Hearst, William Randolph (1863–1951)
• Hendrick, Burton Jesse (1870–1949)
• Henri, Robert (1865–1929)
• Hepburn Act (1906)
• Herron, George D. (1862–1925)
• Hickok, James Butler “Wild Bill” (1837–1876)
• Hill, James J. (1838–1916)
• Hillquit, Morris (1869–1933)
• Hine, Lewis (1874–1940)
• Hitchcock, Gilbert (1859–1934)
• Hoar, George Frisbie (1826–1904)
• Holden v. Hardy (1898)
• Holmes, Oliver Wendell, Jr. (1841–1935)
• Holmes, Oliver Wendell, Sr. (1809–1894)
• Home Rule
• Homer, Winslow (1836–1910)
• Homestead Strike
• Homosexuality
• Hoover, Herbert (1874–1964)
• Houdini, Harry (1874–1926)
• House, Edward Mandell (1858–1938)
• Housing Reform
• Howe, Frederic C. (1867–1940)
• Howells, William Dean (1837–1920)
• Hughes, Charles Evans (1862–1948)
• Hull, Cordell (1871–1955)
• Hunt, Richard Morris (1827–1895)
• Hunter, Robert (1874–1942)
• Huntington, Henry E. (1850–1927)
• I
• Ickes, Harold L. (1874–1952)
• Immigrants' Protective League
• Immigration and Ethnicity
• Immigration Commission, United States
• Immigration Restriction
• Immigration Restriction League
• Imperialism
• Income Tax, Federal
• Indian Boarding Schools
• Industrial Commission, United States
• Industrial Democracy
• Industrial Workers of the World
• Influenza Pandemic of 1918
• Ingersoll, Robert G. (1833–1899)
• Initiative
• Institutional Economics
• Insull, Samuel (1859–1938)
• Insurance Companies, Regulation of
• International Council of Women (1888)
• International Ladies' Garment Workers Union
• Interstate Commerce Law
• Interurban Railways
• Ireland, John (1838–1918)
• Irrigation
• Ives, Charles E. (1874–1954)
• J
• Jackson, Helen Hunt (1830–1885)
• James, Henry (1843–1916)
• James, William (1842–1910)
• Jameson, John Franklin (1859–1937)
• Johnson, Hiram W. (1866–1945)
• Johnson, Jack (1878–1946)
• Johnson, Tom Loftin (1854–1911)
• Johnson, Walter (1887–1946)
• Johnstown Flood (1889)
• Jolson, Al (1886–1950)
• Jones, Mother (1837–1930)
• Jones, Samuel M. (1846–1904)
• Joplin, Scott (1868–1917)
• Jordan, David Starr (1851–1931)
• Joseph, Chief (c. 1840-1904)
• Junior Republics
• Juvenile Courts
• K
• Kallen, Horace M. (1882–1974)
• Keating-Owen Act (1916)
• Keller, Helen (1880–1968)
• Keller v. United States (1909)
• Kelley, Florence (1859–1932)
• Kelley, Oliver H. (1826–1913)
• Kellogg, Paul Underwood (1879–1958)
• Kellor, Frances Alice (1873–1952)
• Kern-McGillicuddy Act (1916)
• Knapp, Seaman Asahel (1833–1911)
• Knights of Labor
• Knox, Philander C. (1853–1921)
• L
• La Flesche, Francis (c. 1857-1932)
• La Follette, Belle Case (1859–1931)
• La Follette, Robert, Sr. (1855–1925)
• Follette's Magazine
• La Follette's Seaman's Act (1915)
• Labor and Industrial Relations
• Labor Legislation, State
• Landis, Kenesaw Mountain (1866–1944)
• Lathrop, Julia Clifford (1858–1932)
• Lauck, William Jett (1879–1949)
• Lawrence Textile Strike (1912)
• Lawson, Thomas W. (1857–1925)
• Lazarus, Emma (1849–1887)
• League of Nations
• Lease, Mary Elizabeth (1853–1933)
• Legislative Reference Library
• Leisure and Popular Culture
• Lenin, Vladimir I. (1870–1924)
• Lenroot, Irvine L. (1869–1949)
• Lewis, Sinclair (1885–1951)
• Lewis, William Henry (1868–1949)
• Liberty Loans
• Libraries, Public
• Lincoln, Robert Todd (1843–1926)
• Lincoln County Wars
• Lincoln-Roosevelt League
• Lindberg, Charles A. (1859–1924)
• Lindsey, Benjamin Barr (1869–1943)
• Lippmann, Walter (1889–1974)
• Literature
• Little Bighorn, Battle of the (1876)
• Lloyd, Henry Demarest (1847–1903)
• Lochner v. New York (1905)
• Lodge, Henry Cabot (1850–1924)
• Loewe v. Lawlor (1908)
• London, Jack (1876–1916)
• London, Meyer (1871–1926)
• Lone Wolf v. Hitchcock (1903)
• Louisiana Purchase Exposition (1904)
• Lovejoy, Owen R. (1866–1961)
• Low, Seth (1850–1916)
• Lowden, Frank Orren (1861–1943)
• Lowell, Abbott Lawrence (1856–1943)
• Lowell, James Russell (1819–1891)
• Ludlow Massacre (1914)
• Lusk Committee
• Lynching
• M
• Macfadden, Bernarr (1868–1955)
• Macune, Charles W. (1851–1940)
• Magazines, Mass Circulation
• Mahan, Alfred Thayer (1840–1914)
• Mail-Order Catalogs
• Maine
• Mann Act (1910)
• Mann-Elkins Act (1910)
• Markham, Edwin (1852–1940)
• Marshall, Thomas R. (1854–1925)
• Masses, The
• Masters, Edgar Lee (1868–1950)
• Mayo, Charles H. (1861–1939), and William J. Mayo (1865–1939)
• McAdoo, William Gibbs (1863–1941)
• McCarthy, Charles (1873–1921)
• McClatchy, C.K. (1858–1936)
• McClure, Samuel S. (1857–1949)
• McCormick, Cyrus Hall (1809–1884)
• McDowell, Mary Eliza (1852–1936)
• McGovern, Francis E. (1866–1946)
• McKelway, Alexander J. (1866–1918)
• McKinley, William (1843–1901)
• McReynolds, James Clark (1862–1946)
• Mead, George Herbert (1863–1931)
• Meat Inspection Act (1906)
• Mellon, Andrew W. (1855–1937)
• Mental Hygiene
• Michelson, Albert Abraham (1852–1931)
• Military Reform
• Minnesota Rate Case
• Mitchell, John (1870–1919)
• Mobile Pledge
• Modernism
• Molly Maguires
• Moody, Dwight L. (1837–1899)
• Morgan, John Pierpont (1837–1913)
• Moskowitz, Henry (1879–1936), and Belle Lindner Moskowitz (1877–1933)
• Most, Johann (1846–1906)
• Mothers' Pensions Acts
• Motion Pictures
• Muckraking
• Mugwumps
• Muir, John (1838–1914)
• Muller v. Oregon (1908)
• Municipal Bath Movement
• Municipal Housekeeping
• Municipal Ownership of Utilities
• Munsey, Frank (1854–1925)
• Murphy, Charles Francis (1858–1924)
• Murphy, Edgar Gardner (1869–1913)
• Museums and Historic Sites
• Music
• N
• Nast, Thomas (1840–1902)
• National Afro-American League
• National American Woman Suffrage Association
• National Association for the Advancement of Colored People
• National Association of Manufacturers
• National Association Opposed to Woman Suffrage
• National Board of Farm Organizations
• National Catholic Welfare Council
• National Child Labor Committee
• National Citizens League
• National Civic Federation
• National Conference on Charities and Corrections
• National Consumers League
• National Education Association
• National Housing Association
• National Industrial Conference Board
• National Labor Union
• National Monetary Commission
• National Municipal League
• National Negro Business League
• National Park Service, United States
• National Progressive Republican League
• National Security League
• National Tax Association
• National War Labor Board, United States
• National Woman's Party
• National Women's Trade Union League
• Naturalism
• Nearing, Scott (1883–1983)
• Neighborhood Idea
• Neutrality
• New Freedom
• New Nationalism
• New South
• New York State Factory Investigating Commission
• Newell, Frederick Haynes (1862–1931)
• Newlands, Francis G. (1848–1917)
• Newspapers, Mass Circulation
• Nonpartisan League
• Norris, Frank (1870–1902)
• Norris, George William (1861–1944)
• North American Civic League for Immigrants
• Northern Securities Company v. United States (1904)
• Norton, Charles Eliot (1827–1908)
• O
• Ochs, Adolph S. (1858–1935)
• O'Hare, Kate Richards (1876–1948)
• O'Keeffe, Georgia (1887–1986)
• Olmsted, Frederick Law, Jr. (1870–1957)
• Olmsted, Frederick Law, Sr. (1822–1903)
• Olney, Richard (1835–1917)
• Open Door Policy
• O'Reilly, Lenora (1870–1927)
• Oshkosh, Reginald (1864–1932)
• Ostrogorski, Moisei Yakovlevich (1854–1919)
• O'Sullivan, Mary Kenney (1864–1943)
• Ouimet, Francis (1893–1967)
• Ovington, Mary White (1865–1951)
• P
• Page, Thomas Nelson (1853–1922)
• Page, Walter Hines (1855–1918)
• Page Act (1875)
• Palmer, Alexander Mitchell (1872–1936)
• Panama Canal
• Panama-Pacific International Exposition (1915)
• Pan-American Exposition (1901)
• Panic of 1907
• Park, Maud Wood (1871–1955)
• Parker, Alton Brooks (1852–1926)
• Parker, Quanah (c. 1852-1911)
• Paterson Textile Strike (1913)
• Patrons of Husbandry (The Grange)
• Patten, Simon N. (1852–1922)
• Paul, Alice (1885–1977)
• Peace Movement
• Peirce, Charles S. (1839–1914)
• Penal Reform
• Penney, J.C. (1875–1971)
• Penrose, Boies (1860–1921)
• Pentecostalism
• People's Party (Populists)
• Perkins, Frances (1882–1965)
• Perkins, George W. (1862–1920)
• Pershing, John Joseph (1860–1948)
• Phelan, James D. (1861–1930)
• Phillips, David Graham (1867–1911)
• Phillips, Ulrich B. (1877–1934)
• Pickford, Mary (1893–1979)
• Pinchot, Amos R.E. (1873–1944)
• Pinchot, Gifford (1865–1946)
• Pingree, Hazen S. (1840–1901)
• Pittsburgh Survey (1907)
• Platt, Thomas Collier (1833–1910)
• Platt Amendment (1902)
• Playground Association of America
• Plessy v. Ferguson (1896)
• Plumb Plan (1919)
• Plunkitt, George W. (1842–1924)
• Poe, Clarence (1881–1964)
• Poindexter, Miles (1868–1946)
• Police Reform
• Political Machines
• Politics
• Pollock v. Farmers' Loan and Trust Company (1895)
• Polygamy
• Pomerene, Atlee (1863–1937)
• Post, Louis Freeland (1849–1928)
• Postal Savings Banks
• Pound, Roscoe (1870–1964)
• Powderly, Terence V. (1849–1924)
• Powell, John Wesley (1834–1902)
• Pragmatism
• Pratt, Richard Henry (1840–1924)
• Preparedness
• Preservation Societies
• Professional Associations
• Progressive Party
• Prohibition
• Psychiatry
• Public Health Movement
• Public Utility Regulation
• Pujo Committee
• Pulitzer, Joseph (1847–1911)
• Pullman, George M. (1831–1897)
• Pure Food and Drug Act (1906)
• Q
• Quay, Matthew S. (1833–1904)
• Quintasket, Christine (c. 1884-1936)
• R
• Race Riots
• Railroad Regulation, Federal
• Randolph, A. Philip (1889–1979)
• Rankin, Jeannette (1880–1973)
• Rauschenbusch, Walter (1861–1918)
• Readjuster Movement
• Realism
• Recall
• Reclamation Act (1902)
• Record, George L. (1859–1933)
• Red Scare
• Redeemers
• Reed, James A. (1861–1944)
• Reed, John (1887–1920)
• Reed, Thomas Brackett (1839–1902)
• Reed, Walter (1851–1902)
• Referendum
• Religion
• Remington, Frederic (1861–1909)
• Revivalism
• Richards, Ellen Henrietta Swallow (1842–1911)
• Riis, Jacob August (1849–1914)
• Robber Barons
• Robins, Raymond (1873–1954), and Margaret Dreier Robins (1868–1945)
• Robinson, Edwin Arlington (1869–1935)
• Robinson, James Harvey (1863–1936)
• Rockefeller, John D. (1839–1937)
• Roosevelt, Franklin D. (1882–1945)
• Roosevelt, Theodore (1858–1919)
• Roosevelt Corollary
• Root, Elihu (1845–1937)
• Rosenwald, Julius (1862–1932)
• Ross, Edward A. (1866–1951)
• Royce, Josiah (1855–1916)
• Rural Free Delivery
• Rural Post Road Act (1916)
• Russell, Charles Edward (1860–1941)
• Russell, Lillian (1861–1922)
• Ruth, George Herman “Babe” (1895–1948)
• Ryan, John A. (1869–1945)
• S
• Sabath, Adolph Joseph (1866–1952)
• Sabbatarianism
• Saint-Gaudens, Augustus (1848–1907)
• Salvation Army
• San Francisco Earthquake (1906)
• Sanger, Margaret (1879–1966)
• Santayana, George (1863–1952)
• Sargent, John Singer (1856–1925)
• Schneiderman, Rose (1882–1972)
• Schofield, John M. (1831–1906)
• School and Society
• Schurz, Carl (1829–1906)
• Schwab, Charles M. (1862–1939)
• Scientific Management
• Scudder, (Julia) Vida Dutton (1861–1954)
• Sears, Roebuck and Company
• Seattle General Strike (1919)
• Sedition Act (1918)
• Segregation
• Selective Service
• Seligman, Edwin R.A. (1861–1939)
• Sewall, May Wright (1844–1920)
• Seymour, William Joseph (1870–1922)
• Sharecropping
• Shaw, Albert (1857–1947)
• Shaw, Anna Howard (1847–1919)
• Sheldon, Charles M. (1857–1946)
• Sheppard-Towner Act (1921)
• Sherman, John (1823–1900)
• Sherman, William T. (1820–1891)
• Sherman Silver Purchase Act (1890)
• Shipping Act of 1916
• Short Ballot
• Sierra Club
• Simkhovitch, Mary Melinda Kingsbury (1867–1951)
• Simons, Algie Martin (1870–1950), and May Wood Simons (1873–1948)
• Sinclair, Upton (1878–1968)
• Singer, Isaac Merritt (1811–1875)
• Single-Tax Movement
• Sitting Bull (c. 1831-1890)
• Sloan, John (1871–1951)
• Small, Albion W. (1854–1926)
• Smith, Alfred Emanuel (1873–1944)
• Smith, Hoke (1855–1931)
• Smith, J. Allen (1860–1924)
• Smith-Hughes Act (1917)
• Smith-Lever Act (1914)
• Smoot, Reed (1862–1941)
• Social Engineering
• Social Gospel
• Social Hygiene
• Social Insurance
• Social Settlements
• Socialism
• Socialist Labor Party
• Socialist Party of America
• Sociological Jurisprudence
• Southern Sociological Congress
• Spalding, Albert G. (1850–1915)
• Spanish-American War
• Spargo, John (1876–1966)
• Spencer, Herbert (1820–1903)
• Spillman, William Jasper (1863–1931)
• Square Deal
• Standard Oil
• Standing Bear, Luther (c. 1868-1939)
• Stanton, Elizabeth Cady (1815–1902)
• Starr, Ellen Gates (1859–1940)
• Stead, William T. (1849–1912)
• Steel
• Steel Strike of 1919
• Steffens, (Joseph) Lincoln (1866–1936)
• Steichen, Edward (1879–1973)
• Stieglitz, Alfred (1864–1946)
• Stimson, Henry Louis (1867–1950)
• Stokes, James Graham Phelps (1872–1960), and Rose Pastor Stokes (1879–1933)
• Straight, Willard D. (1880–1918)
• Straus, Oscar S. (1850–1926)
• Street Railways
• Strong, Josiah (1847–1916)
• Sullivan, John L. (1858–1918)
• Sullivan, Louis H. (1856–1924)
• Sullivan, Mark (1874–1952)
• Sulzer, William (1863–1941)
• Sumner, William Graham (1840–1910)
• Sunday, Billy (1862–1935)
• Supreme Court, U.S.
• Survey, The
• Sweatshops
• Swift, Gustavus Franklin (1839–1903)
• Swift and Company v. United States (1905)
• T
• Taft, William Howard (1857–1930)
• Taggart, Thomas (1856–1929)
• Tammany Hall
• Tarbell, Ida Minerva (1857–1944)
• Tariff Reform
• Tax Reform, State
• Taylor, Frederick W. (1856–1915)
• Technology and Systematization
• Telegraph
• Telephone
• Teller Amendment (1898)
• Terman, Lewis M. (1877–1956)
• Terrell, Mary Church (1863–1954)
• Thomas, William Hannibal (1843–1935)
• Thorndike, Edward Lee (1874–1949)
• Thorpe, Jim “Bright Path” (1887–1953)
• Tiffany, Louis Comfort (1848–1933)
• Tillman, Benjamin R. (1847–1918)
• Tin Pan Alley
• Titanic
• Track and Field
• Tramps
• Trans-Mississippi and International Exposition (1898)
• Transportation Act (1920)
• Treaty of Portsmouth (1905)
• Triangle Shirtwaist Company Fire (1911)
• Trotter, William Monroe (1872–1934)
• Tumulty, Joseph P. (1879–1954)
• Turner, Frederick Jackson (1861–1932)
• Turner, Henry McNeal (1834–1915)
• Tuskegee Institute
• Twain, Mark (1835–1910)
• Tweed, William “Boss” (1823–1878)
• U
• Underwood, Oscar Wilder (1862–1929)
• Uneeda Biscuit Company
• Unemployment
• Union Labor Party
• Unions, Trade and Labor
• United Fruit Company
• United Mine Workers of America
• United States v. American Tobacco Company (1911)
• United States v. United States Steel Corporation (1920)
• Urban League
• Urbanization
• U'Ren, William S. (1859–1949)
• V
• Van Hise, Charles R. (1857–1918)
• Vanderbilt, Cornelius (1794–1877)
• Vardaman, James K. (1861–1930)
• Vaudeville
• Veblen, Thorstein B. (1857–1929)
• Veiller, Lawrence Turnure (1872–1959)
• Villard, Oswald Garrison (1872–1949)
• W
• Wages and Hours Legislation
• Wagner, John Peter “Honus” (1874–1955)
• Wagner, Robert F. (1877–1953)
• Walker, Francis A. (1840–1897)
• Walker, Madam C.J. (1867–1919)
• Walker, Moses Fleetwood (1857–1924)
• Wallace, Henry Cantwell (1866–1924)
• Walsh, David Ignatius (1872–1947)
• Walsh, Francis P. (1864–1939)
• Wanamaker, John (1838–1922)
• War Industries Board, United States
• Ward, Lester Frank (1841–1913)
• Warehouse Act (1916)
• Warner, Charles Dudley (1829–1900)
• Washington, Booker T. (1856–1915)
• Watson, Thomas Edward (1856–1922)
• Weaver, James Baird (1833–1912)
• Webb-Kenyon Act (1913)
• Webb-Pomerene Act (1918)
• Weber, Adna Ferrin (1870–1968)
• Wells, David A. (1828–1898)
• Wells-Barnett, Ida Bell (1862–1931)
• Westinghouse, George (1846–1914)
• Weyerhauser, Frederick (1833–1914)
• Weyl, Walter Edward (1873–1919)
• Wharton, Edith (1862–1937)
• Wheeler, Burton K. (1882–1975)
• Whistler, James McNeill (1834–1903)
• White, Caroline Earle (1833–1916)
• White, Edward Douglass (1845–1921)
• White, Sue Shelton (1887–1943)
• White, William Allen (1868–1944)
• Whitlock, Brand (1869–1934)
• Whitman, Walt (1819–1892)
• Wiley, Harvey W. (1844–1930)
• Willard, Frances Elizabeth Caroline (1839–1898)
• Wilson v. New (1917)
• Wilson, William Bauchop (1862–1934)
• Wilson, Woodrow (1856–1924)
• Wise, Stephen S. (1874–1949)
• Wister, Owen (1860–1938)
• Woman Suffrage
• Woman's Christian Temperance Union
• Woman's Peace Party
• Women and Gender
• Women's Protective Legislation
• Wood, Leonard (1860–1927)
• Woodcraft Indians
• Woods, Robert Archey (1865–1925)
• Woodson, Carter G. (1875–1950)
• Working Girls' Clubs
• Workmen's Compensation
• World War I
• Wounded Knee (1890)
• Wright, Carroll Davidson (1840–1909)
• Wright, Frank Lloyd (1867–1959)
• Wright, Orville (1871–1948), and Wilbur Wright (1867–1912)
• Y
• Yellow Journalism
• Yellow-Dog Contract
• Yerkes, Charles Tyson (1837–1905)
• Young Men's Christian Association
• Young, Denton True “Cy” (1867–1955)
• Z
• Ziegfeld, Florenz, Jr. (1867–1932)
• Zionism
• Primary Documents
• Treaties and Foreign Policy Declarations
• Invitation to Pan-American Conference (1881)
• The Independence of Cuba (1898)
• Annexation of Hawaii (1898)
• William McKinley's Message on the Philippines (1898)
• Treaty of Peace with Spain (1898)
• Senator Beveridge Advocates Imperialism (1899)
• Open Door Policy (1899)
• Platt Amendment (1902)
• Roosevelt Corollary to the Monroe Doctrine (1904)
• President Roosevelt's Letter to Senator Henry Cabot Lodge on Japan (1905)
• Root-Takahira Agreement (1908)
• Gentlemen's Agreement on Japanese Immigration (1908)
• Report of the United States Commission on Immigration (1911)
• President Taft Proclaims Dollar Diplomacy (1912)
• President Wilson's Mobile Pledge (1913)
• President Wilson's Special Message on Mexican Relations (1913)
• President Wilson's Panama Canal Tolls Message (1914)
• President Wilson's Appeal for Neutrality (1914)
• Secretary of State Bryan's Note on the Sinking of the Lusitania (1915)
• American Occupation of Haiti (1916)
• The Sussex Pledge (1916)
• Zimmermann Note (1917)
• President Wilson's Peace Without Victory Speech (1917)
• President Wilson Asks for Declaration of War (1917)
• Senator Norris Opposes American Intervention in World War I (1917)
• Lansing-Ishii Agreement (1917)
• President Wilson's Fourteen Points (1918)
• Archangel Expedition Aide-Memoire (1918)
• President Wilson Advocates the League of Nations (1919)
• Senator Lodge Opposes the League of Nations (1919)
• Political Statements
• Speech of Senator Blanche K. Bruce to the U.S. Senate (1876)
• President Chester A. Arthur's Proclamation on Civil Service (1883)
• William Jennings Bryan's Cross of Gold Speech (1896)
• President Theodore Roosevelt Advocates the Conservation of Natural Resources (1907)
• Appeal of Seven Governors to Theodore Roosevelt (1912)
• Roosevelt's Response to Seven Governors (1912)
• Theodore Roosevelt Proclaims the New Nationalism (1912)
• Pujo Committee Report: Concentration of Control in Banking and Credit (1912)
• First Inaugural Address of President Wilson (1913)
• United States Commission on Industrial Relations: Concentration of Control in Industry (1915)
• President Wilson's Appeal to the Voters to Return a Democratic Congress (1918)
• Warren G. Harding Proposes a Return to Normalcy (1920)
• Political Party Platforms
• About poilitical Pary Reforms
• Greenback Party (1884)
• Anti-Monopoly Party (1884)
• Prohibition Party (1884)
• Union Labor Party (1888)
• Socialist Labor Party (1892)
• People's Party Platform (1892)
• Republican Party of Wisconsin Platform (1912)
• Socialist Party Platform (1912)
• Progressive Party Platform (1912)
• Acts of Congress and Constitutional Amendments
• Chinese Exclusion Act (1882)
• Interstate Commerce Act (1887)
• Dawes Severalty Act (1887)
• Sherman Antitrust Act (1890)
• United States Constitution, Article XIV (1913)
• United States Constitution, Article XVII (1913)
• Federal Trade Commission Act (1914)
• Clayton Antitrust Act (1914)
• Adamson Eight-Hour Act (1916)
• Immigration Literacy Act (1917)
• Espionage Act (1917)
• Sedition Act (1918)
• Railway Administration Act (1918)
• Child Labor Act (1919)
• Volstead Act (1919)
• United States Constitution, Article XVIII (1919)
• United States Constitution, Article XIX (1920)
• Court Decisions
• Munn v. Illinois
• Civil Rights Cases
• Ex parte Yarbrough
• In re Jacobs
• Pollock v. Farmers' Loan and Trust Company
• United States v. E.C. Knight Company (1895)
• In re Debs (1895)
• Plessy v. Ferguson (1896)
• Northern Securities Company v. United States (1904)
• Lochner v. New York (1905)
• Adair v. United States (1908)
• Muller v. Oregon (1908)
• Standard Oil Company of New Jersey v. United States (1911)
• Bunting v. Oregon (1917)
• Wilson v. New (1917)
• Hammer v. Dagenhart (1918)
• Schenck v. United States (1919)
• Abrams v. United States (1919)
• Declarations and Principles of Organizations
• Knights of Labor Platform (1878)
• Eight-Hour Association Declaration of Principles (1886)
• American Federation of Labor (1887)
• American Economic Association Platform (1887)
• Farmers' Alliance Ocala Demands (1890)
• Woman's Christian Temperance Union Do Everything Policy (1893)
• Anti-Imperialist League Platform (1899)
• National Association of Manufacturers Declaration of Principles (1903)
• National Association of Colored Women (1904)
• National American Woman Suffrage Association Declaration of Principles (1904)
• Niagara Movement Declaration of Principles (1905)
• Industrial Workers of the World Manifesto (1905)
• National Progressive Republican League Declaration of Principles (1911)
• International Congress of Women Manifesto (1915)
• Chronology
• Master Bibliography