Columbia subject headings:
Held, Louis, 1851-1927.
Weimar (Thuringia, Germany)--Pictorial works.
Harvard subject headings:
Held, Louis, 1851-1927
Weimar (Thuringia, Germany)--Pictorial works.
Princeton subject headings:
Held, Louis, 1851-1927.
Photography, Artistic.
Weimar (Thuringia, Germany)--Description and travel.
Weimar (Thuringia, Germany)--Social conditions--Pictorial works.