Columbia subject headings:
Drawing, American--20th century--Exhibitions.
National Portrait Gallery (Smithsonian Institution)--Exhibitions.
Portrait drawing, American--20th century--Exhibitions.
Harvard subject headings:
National Portrait Gallery (Smithsonian Institution)--Exhibitions.
Portrait drawing, American--20th century--Exhibitions.
Portrait drawing--Washington (D.C.)--Exhibitions.
United States--Biography--Portraits--Exhibitions.
Princeton subject headings:
National Portrait Gallery (Smithsonian Institution)--Exhibitions.
Portrait drawing, American--20th century--Exhibitions.
Portrait drawing--Washington (D.C.)--Exhibitions.
Portraits.
United States--Biography--Portraits--Exhibitions.