Columbia subject headings:
Open and closed shop--California--San Francisco--History--20th century.
San Francisco Chamber of Commerce. Law and Order Committee--History--20th century.
Strikes and lockouts--California--San Francisco--History--20th century.
Harvard subject headings:
Open and closed shop--California--San Francisco--History--20th century.
San Francisco Chamber of Commerce. Law and Order Committee--History--20th century.
Strikes and lockouts--California--San Francisco--History--20th century.
Princeton subject headings:
Open and closed shop--California--San Francisco--History--20th century.
San Francisco Chamber of Commerce. Law and Order Committee
Strikes and lockouts--California--San Francisco--History--20th century.