Columbia subject headings:
National Archives (U.S.)--Photograph collections--Catalogs.
United States--History--1865---Pictorial works--Catalogs.
United States--Pictorial works--Catalogs.
Harvard subject headings:
National Archives (U.S.)--Photograph collections--Catalogs.
United States--History--1865---Pictorial works--Catalogs.
United States--Pictorial works--Catalogs.
United States. National Archives and Records Service--Photograph collections--Catalogs.
Princeton subject headings:
National Archives (U.S.)--Photograph collections.
United States--History--1865---Pictorial works.
United States--Pictorial works.