found: Fourth international. Emergency conference, 1940. Manifesto ... 1940.
found: Fourth International (New York, N.Y.). Fourth International, May 1940: p. 2, (Socialist Workers Party; American Section of the Fourth International)
found: Goldwater, W. Radical periodicals in America ... 1964: p. xiv (Socialist Workers Party: SWP; "official" Trotskyist party, after it left the S[ocialist] P[arty] on completion of its brief sojourn there in 1936-1937)
found: Encyclopedia of the American left, c1998: p. 900 (founding of the Workers Party (WP) in 1940 came about as a result of the first major split in the ... Socialist Workers Party (SWP)).
Socialist Workers Party
