Columbia subject headings:
Artists--Germany--Correspondence.
Expressionism (Art)--Germany.
Postcards--Germany--History--20th century.
Schmidt-Rottluff, Karl, 1884-1976.
Harvard subject headings:
Artists--Germany--Correspondence.
Expressionism (Art)--Germany
Postcards--Germany--History--20th century.
Schmidt-Rottluff, Karl, 1884-1976.
Princeton subject headings:
Artists--Germany--Correspondence.
Expressionism (Art)--Germany.
Postcards--Germany--History--20th century.
Schmidt-Rottluff, Karl, 1884-1976.