Columbia subject headings:
Harvard subject headings:
Artists--Germany--Biography.
Graphic artists--Germany--Biography.
Rudinoff, Willy, 1866-1931--Friends and associates.
Rudinoff, Willy, 1866-1931.
Singers--Germany--Biography
Wedekind, Frank, 1864-1918
Princeton subject headings:
Artists--Germany--Biography.
Entertainers--Germany--Biography.
Rudinoff, Willy, 1866-1931.
Wedekind, Frank, 1864-1918--Friends and associates.