Civil rights -- United States

Primarily correspondence, reports, minutes, newspaper clippings, and broadsides dealing with his activities as a leader in Local 22 (in Series I), as well as his other union and political activities (in Series II). Among the most significant material in the collection is correspondence documenting Zimmerman's activities with the Communist Party in the U.S. and its various factions and splinter groups, as well as other political organizations and figures.

The Charles Zimmerman papers consist primarily of correspondence, reports, minutes, newspaper clippings, and broadsides dealing with his activities as a leader in Local 22 (in Series I), as well as his other union and political activities (in Series II).

These records include correspondence, reports, speeches, notes, printed matter, minutes of meetings, proceedings of the League and of the International Congress of Working Women, biographical material on the League's officers, and correspondence between the National League and its local branches. Major issues covered include the eight-hour day, minimum wage, establishment of sanitary work areas, federal aid to education, civil rights, price controls and social security.