- Communism -- Pennsylvania -- Pittsburgh
- Internal security -- United States
- Iron and steel workers -- Pennsylvania -- Pittsburgh
- Labor unions and communism
- Communist Party of the United States of America.
- Jones & Laughlin Steel Corporation.
- Steel Workers Organizing Committee (U.S.).
- United Steelworkers of America. Local 1272 (Pittsburgh, Pa.).
- United Steelworkers of America.
- Gorczyca, Bernard, 1900-1989
- Pittsburgh (Pa.)
- South Side (Pittsburgh, Pa.)
- Oral histories (Document genres)