Columbia subject headings:
International Typographical Union. No. 6 (New York, N.Y.)
Printing industry--Employees--Labor unions--New York (State)--New York.
Printing industry--New York (State)--New York--Automation.
Harvard subject headings:
International Typographical Union. Union no. 6, New York.
Printing industry--Employees--Labor unions--New York (State)--New York.
Printing industry--New York (State)--New York--Automation.
Princeton subject headings:
International Typographical Union. No. 6 (New York, N.Y.)
Printing industry--Employees--Labor unions--New York (State)--New York.
Printing industry--New York (State)--New York--Automation.