Columbia subject headings:
Harvard subject headings:
Modersohn, Otto, 1865-1943--Correspondence.
Overbeck, Fritz, 1869-1909--Correspondence,
Overbeck, Fritz, 1869-1909--Correspondence.
Painters--Germany--Correspondence.
Painting, German--19th century--Exhibitions
Painting, German--20th century--Exhibitions
Princeton subject headings:
Modersohn, Otto, 1865-1943--Correspondence.
Overbeck, Fritz, 1869-1909--Correspondence,.
Painters--Germany--Correspondence.
Painting, German--19th century--Exhibitions.
Painting, German--20th century--Exhibitions.