Columbia subject headings:
Artists--Germany--Correspondence.
Bissier, Julius, 1893-1965--Correspondence.
Schlemmer, Oskar, 1888-1943--Correspondence.
Harvard subject headings:
Artists--Germany--Correspondence.
Bissier, Julius, 1893-1965--Correspondence.
Schlemmer, Oskar, 1888-1943--Correspondence.
Princeton subject headings:
Artists--Germany--Correspondence.
Bissier, Julius, 1893-1965--Correspondence.
Schlemmer, Oskar, 1888-1943--Correspondence.