Columbia subject headings:
Printers--United States.
Printing--United States--History.
United States--Imprints.
Harvard subject headings:
American literature--Bibliography
Printers--United States
Printing--United States--History
United States--Bibliography
United States--Imprints
Princeton subject headings:
Printers--United States.
Printing--United States--History.
United States--Imprints.