Columbia subject headings:
Artists--Germany--Pictorial works.
Germans--Foreign countries--Pictorial works.
Immigrants--Germany--Pictorial works.
Portrait photography--Germany.
Harvard subject headings:
Artists--Germany--Pictorial works.
Germans--Foreign countries--Pictorial works.
Immigrants--Germany--Pictorial works.
Portrait photography--Germany.
Princeton subject headings:
Artists--Germany--Pictorial works.
Germans--Foreign countries--Pictorial works.
Immigrants--Germany--Pictorial works.
Portrait photography--Germany.