Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Labor unions--United States--History--Sources.
Galarza, Ernesto, 1905-1984--Archives.
Stanford University. Libraries. Department of Special Collections.
Princeton subject headings:
Galarza, Ernesto, 1905-1984.
Labor unions--California--Officials and employees--Archives--Catalogs.
Mexican Americans--Archives--Catalogs.