This is a list of newspapers and magazines in the United States owned by, or editorially supportive of, the Socialist Party of America (SPA, established 1901).
Also included are papers associated with the direct predecessors of the SPA — the Social Democratic Party of America with headquarters in Chicago (split from the Social Democracy of America in 1898) and the Social Democratic Party of America with headquarters in Springfield, Massachusetts (split from the Socialist Labor Party of America in 1899).
The format is: (1) Title, (2) place of publication, (3) publisher, (4) (dates).
Dates indicated are the years the papers were known to be in press and allied with the Socialist Party, not necessarily all years of publication.
Alaska
Alaska Socialist, Fairbanks (1913-19??) Free Press, Fairbanks (1914-1914) Socialist Press, Fairbanks (1914-19??) Tanana Valley Socialist, Fairbanks (19??-19??)
Arkansas
Arkansas Socialist, Little Rock: L.W. Lowry and S.W. Harvey (1906-1907) Call to Action, Paragould (1912-19??) Commoner, Mena (1938-19??) Commoner, Pine Bluff: Amasa George Hurd (1906-1907) Commonwealth College Fortnightly, Mena (1925-1938) Crawford County Star, Van Buren (1913) Critic, Piggott: Charles N. Walker (1912-1917) Fair Deal, Siloam Springs (1907) Greene County Socialist, Paragould (1913-1914) Hot Springs Clarion, Hot Springs (1913) Huntington Herald, Huntington: Dan Hogan (1901-1912) Southern Worker, Huntington: Dan Hogan (1912-c. 1916) Investigator, Green Forest, Berryville: J.W. Fairchild (1911-1913) Jefferson County Agitator, Pine Bluff: George Washington Galloway (1913-1914) Monroe County Socialist, Clarendon (1913) People's Friend, Rogers: W.A. Daugherty, A.M. Merrill (1909-1915) Pioneer, Maddock (White County): John Harlan (1908-1912) Pulaski County Socialist, Little Rock (1913) Red Flag, Fort Smith (1913) Revolutionist, Jonesboro (1913) White County Worker, Judsonia (1913) Workers’ Weekly, Little Rock: W.H. Tanner and C.H. Reeb (1915)
California
California Progressive Leader, Los Angeles (1939-194?) California Social-Democrat, Los Angeles (1911-19??) California Socialist, San Francisco (1902-1903) Class Struggle, San Francisco (1899-1901) Advance, San Francisco (1901-1902) Common Sense, Los Angeles (1904-1909) Forum, Stockton (1921-1959) Labor Action, San Francisco (1936-1937) Los Angeles Socialist, Los Angeles (1901-1904) New Charter, Santa Cruz (1893-1898) Revolt, San Francisco (1911-19??) Western Comrade, Los Angeles: Job Harriman, Frank E. Wolfe (1913-1918)
Colorado
World for the Workers, Denver (1913)
Connecticut
Bridgeport Examiner, Bridgeport (1913-19??) Sunbeam, Hartford (1841-18??)
Florida
The Courier, Crystal Springs
Florida Beacon, Tampa, Frank Sullivan and later George Miller (1911-?)
Idaho
Inland Empire Echo, Lewison (1911-?)
Illinois
American Appeal, Chicago (1926-1927) American Socialist, Chicago: J. Louis Engdahl (1914-1917) Chicago Evening World, Chicago (1912-1912) Chicago Labor, Chicago (1893-1893) Chicago Socialist, Chicago (1902-1907) Chicago Socialist, Chicago (1912-19??) Christian Socialist, Danville (1903-1916) International Socialist Review, Chicago (1900-1918) Nauvoo Tribune, Nauvoo (1852-18??) Party Builder, Chicago (1912-1914) Quincy Socialist, Quincy (1913) Rock Island County Socialist, Moline (1913) Social Democratic Herald, Chicago (1898-1913) Social Justice, Canton (1915-19??) Socialist Alliance, Chicago (1896-1???) Socialist, Chicago (1878-18??) Solidarity, Chicago (1920-1921) Tri-City Leader, Illinois Workers' Call, Chicago (1899-1906) Chicago Daily Socialist, Chicago (1906-1912) Young People's Socialist Magazine, Chicago: William F. Kruse
Indiana
Coming Nation, Greensburg (1893-1913) Indiana Socialist, Indianapolis (1907-1907) Social Democrat, Terre Haute (1897-1898)
Iowa
Boone County Searchlight, Boone (1913) Cerro Gordo Leader, Mason City (1913) Clinton County Socialist, Lyons (1913) Council Bluffs Socialist, Council Bluffs (1913) Dallas County Worker, Perry (1913) Floyd County Socialist, Charles City (1913) Iowa Socialist, Dubuque (1902-1904) Linn County Searchlight, Cedar Rapids (1913) Marshall County Tocsin, Marshalltown (1913) Monroe County Leader, Albia (1913) Muscatine County Socialist, Muscatine (1913) Ottumwa Referendum, Ottumwa (1913) Scott County Socialist, Davenport (1913) Searchlight, Grinnell (1913) Vanguard, Waterloo (1913) Voice of the Toilers, Centerville (1913)