Columbia subject headings:
Monotype (Engraving), American--Exhibitions.
Monotype (Engraving)--United States--20th century--Exhibitions.
Harvard subject headings:
Monotype (Engraving), American--20th century--Exhibitions.
Monotype (Engraving), American--Exhibitions.
Monotype (Engraving)--20th century--United States--Exhibitions.
Princeton subject headings:
Monotype (Engraving), American--Exhibitions.
Monotype (Engraving)--20th century--United States--Exhibitions.