Columbia subject headings:
Authors, Czech--20th century--Correspondence.
Martínek, Vojtěch, 1887-1960--Correspondence.
Závada, Vilém--Correspondence.
Harvard subject headings:
Martínek, Vojtěch, 1887-1960--Correspondence.
Závada, Vilém--Correspondence.
Princeton subject headings:
Authors, Czech--20th century--Correspondence.
Martínek, Vojtěch, 1887-1960--Correspondence.
Závada, Vilém--Correspondence.