Columbia subject headings:
Carpenters--Labor unions--Oregon--Portland--History.
United Brotherhood of Carpenters and Joiners of America--History.
Harvard subject headings:
Carpenters--Labor unions--Oregon--Portland--History.
United Brotherhood of Carpenters and Joiners of America--History.
Princeton subject headings:
Carpenters--Labor unions--Oregon--Portland--History.
United Brotherhood of Carpenters and Joiners of America--History.