Columbia subject headings:
Clerks (Retail trade)--New York (State)--New York.
Communism--New York (State)--New York.
Labor unions--New York (State)--New York.
Retail trade--New York (State)--New York.
Harvard subject headings:
Princeton subject headings:
Clerks--New York (State)--New York.
Communism--New York (State)--New York.
Labor unions--New York (State)--New York.
Retail trade--New York (State)--New York.