Correspondence, writings, minutes, internal bulletins and other internal party documents, legal documents, and printed matter,
relating to Leon Trotsky, the development of American Trotskyism from 1928 until the split in the Socialist Workers Party
in 1940, the development of the Workers Party and its successor, the Independent Socialist League, from that time until its
merger with the Socialist Party in 1958, Trotskyism abroad, the Dewey Commission hearings of 1937, legal efforts of the Independent
Socialist League to secure its removal from the Attorney General's list of subversive organizations, and the political development
of the Socialist Party and its successor, Social Democrats, U.S.A., after 1958.