found: His We demand freedom!, 1951:t.p. (William L. Patterson, national executive secretary, Civil Rights Congress) p. 3 (60th birthday rally August 1951)
found: LC data base, 2-7-90(hdg.: Patterson, William L., 1891- )
found: Havlice, P.P. Index to literary biog.: 1st suppl., 1983(Patterson, William Lorenzo, 1890-1980; American writer of non-fiction)
found: Biog. and geneal. master index, 1981-1985 cumulation(Petterson William L., 1890-1980; lists 3 sources giving 1890 birth date; Patterson, William L., 1891-1980; lists one source giving 1891 birth date)
found: Contemp. authors:v. 97-100 (Patterson, William Lorenzo, 1890-1980; b. 8-27-1890 in San Francisco; d. 3-5-1980 in New York; noted civil rights lawyer; active in communist party)
found: NUCMC data from Moorland-Spingarn Research Center, Howard Univ., Washington, DC for His Papers, 1919-1979(William Lorenzo Patterson, 1891-1980; often known as "Mr. Civil Rights")
found: African American National Biography, accessed February 28, 2015, via Oxford African American Studies Center database:(Patterson, William L.; communist, lawyer; born 27 August 1891 in San Francisco, California, United States; completed the Hastings College of Law at the University of California in San Francisco (1919); became chairman of the National Association for the Advancement of Colored People (NAACP) branch in Oakland; enrolled in the Communist Party Workers School (1927); was sent by the American Communist Party to the Soviet Union to attend the University of Toiling People of the Far East, in Moscow; communist organizer, teacher, and public speaker in New York City; joined actor and activist Paul Robeson, to present to the United Nations the petition, We Charge Genocide: The Crime of Government against the Negro People (1951); honors include, the Lenin Anniversary Medal from the Union of Soviet Socialist Republics (1971); Paul Robeson Memorial Medal by the Academy of Arts of the German Democratic Republic (1978); died 05 March 1980 in The Bronx, New York, New York, United States)
