Columbia subject headings:
San Francisco (Calif.)--History--Pictorial works.
San Francisco (Calif.)--Pictorial works.
Harvard subject headings:
San Francisco (Calif.)--History--Pictorial works.
San Francisco (Calif.)--Pictorial works.
Princeton subject headings:
San Francisco (Calif.)--History--Pictorial works.
San Francisco (Calif.)--Pictorial works.