Columbia subject headings:
Schmidt, Willi, 1910---Correspondence.
Set designers--Germany--Correspondence.
Theaters--Stage-setting and scenery.
Harvard subject headings:
Schmidt, Willi, 1910---Correspondence.
Set designers--Germany--Correspondence.
Theaters--Stage-setting and scenery
Princeton subject headings:
Schmidt, Willi, 1910---Correspondence.
Theater--Germany.