- Sinclair, Upton (1878-1968): An entry from SJP's <i>St. James Encyclopedia of Popular Culture</i> by Ian Gordon, 2000
- Biography - Sinclair, Upton (1878-1968): An article from: Contemporary Authors Online by Gale Reference Team, 2006-01-01
- Damaged goods; a novel about the victims of syphilis: the great play ""Les avaries,"" by Brieux novelized with the approval of the author, by Upton Sinclair by Upton (1878-1968). Brieux Sinclair, 1948
- The wet parade [by] Upton Sinclair by Upton (1878-1968) Sinclair, 1931-01-01
- The wet parade [by] Upton Sinclair by Upton (1878-1968) Sinclair, 1931
- SINGING JAILBIRDS. A Drama in Four Acts. by Upton [Beall. 1878 - 1968]. Sinclair, 1924-01-01
- The cry for justice; an anthology of the literature of social protest; the writings of philosophers, poets, novelists, social reformers, and others who have voiced the struggle against social injustice, selected from twenty-five languages by Upton (1878-1968) (editor) Sinclair, 1915-01-01
- CLIF FARADAY In COMMAND or The Fight of His Life. TRUE BLUE. Striking Stories of Naval Academy Life. No. 39. February 4, 1899. by Ensign Clarke [pseudonym for Sinclair, Upton. 1878 - 1968]. Fitch, 1899-01-01
- LoveÃ?¯Ã'¿Ã'½s pilgrimage; a novel by Upton (1878-1968) Sinclair, 1929
- Love's pilgrimage; a novel by Upton (1878-1968) Sinclair, 1929
- !No pasaran! (They shall not pass) : a story of the Battle of Madrid by Upton (1878-1968) Sinclair, 1937
- WEST POINT RIVALS, or Mark Mallory's Stratagem written by Upton Sinclair in Brown Cloth with Red Square & Man in Uniform & Hat & Tall Black Boots holding gold Gilt Sword, West Point Series#4 by AKA (Upton Sinclair 1878-1968 ) (Lieut.)Frederick Garrison, 1903
- Upton Beall Sinclair : 1878-1968 : A John F. Kennedy Memorial Library Exhibition by Upton] California State University, Los Angeles. John F. Kennedy Memo [Sinclair, 1978-01-01
- The Crimes Of The "times": A Test Of Newspaper Decency by Sinclair Upton 1878-1968, 2010-09-29
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