Columbia subject headings:
Archives--United States--Catalogs.
Unemployed--United States--Bibliography.
United States. President's Emergency Committee for Employment--Bibliography.
United States. President's Organization on Unemployment Relief--Bibliography.
Harvard subject headings:
Archives--United States--Catalogs
Unemployed--United States--Bibliography--Catalogs.
Unemployed--United States--Bibliography.
United States. President's Emergency Committee for Employment--Archives--Catalogs.
United States. President's Emergency Committee for Employment--Bibliography.
United States. President's Organization on Unemployment Relief--Archives--Catalogs.
United States. President's Organization on Unemployment Relief--Bibliography.
Princeton subject headings: