Columbia subject headings:
Artists--Russia (Federation)--Correspondence.
Benois, Alexandre, 1870-1960--Correspondence.
Diaghilev, Serge, 1872-1929--Correspondence.
Harvard subject headings:
Artists--Russia--Correspondence.
Benois, Alexandre, 1870-1960--Correspondence.
Diaghilev, Serge, 1872-1929--Correspondence.
Impresarios--Russia--Correspondence.
Princeton subject headings:
Artists--Russia--Correspondence.
Artists--Soviet Union--Correspondence.
Benois, Alexandre, 1870-1960--Correspondence.
Diaghilev, Serge, 1872-1929--Correspondence.