Columbia subject headings:
Photography, Artistic.
United States--Pictorial works.
United States--Social conditions--1918-1932--Pictorial works.
United States--Social conditions--1933-1945--Pictorial works.
Harvard subject headings:
Photography, Artistic.
United States--Pictorial works.
United States--Social conditions--1918-1932--Pictorial works.
United States--Social conditions--1933-1945--Pictorial works.
Princeton subject headings:
Photography, Artistic.
United States--Pictorial works.