Columbia subject headings:
Mark, Mary Ellen, 1940-2015--Catalogs.
Portrait photography.
Harvard subject headings:
Documentary photography--United States
Mark, Mary Ellen, 1940-
Mark, Mary Ellen, 1940-2015.
Portrait photography--United States
United States--Social life and customs--20th century--Pictorial works.
Princeton subject headings:
Documentary photography--United States.
Mark, Mary Ellen, 1940-2015.
Portrait photography--United States.
United States--Social life and customs--20th century--Pictorial works.