Columbia subject headings:
Printing--Specimens--Bibliography.
Type and type-founding--Bibliography.
Harvard subject headings:
Printing--Specimens--Bibliography.
Printing--United States--Specimens--Exhibitions.
Type and type-founding--Bibliography.
Type and type-founding--United States--Specimens--Exhibitions.
Princeton subject headings:
Type and type-founding--Bibliography.
Type and type-founding--Exhibitions.