Columbia subject headings:
Black-and-white photography.
Harbors in art.
Harbors--Germany--Hamburg--History--19th century--Pictorial works.
Kofahl, Otto, 1863-1940.
Photography of ships.
Schmidt, Franz, 1861-1950.
Harvard subject headings:
Black-and-white photography
Harbors in art
Harbors--Germany--Hamburg--History--19th century--Pictorial works.
Kofahl, Otto, 1863-1940
Photography of ships
Schmidt, Franz, 1861-1950.
Princeton subject headings:
Black-and-white photography.
Harbors in art.
Harbors--Germany--Hamburg--History--19th century--Pictorial works.
Kofahl, Otto, 1863-1940.
Photography of ships.
Schmidt, Franz, 1861-1950.