Columbia subject headings:
Blumenthal, Henriette Itta, 1904-1995--Correspondence.
Weiss, Peter, 1916-1982--Correspondence.
Harvard subject headings:
Authors, German--20th century--Correspondence
Blumenthal, Henriette Itta, 1904-1995--Correspondence.
Weiss, Peter, 1916-1982--Correspondence.
Princeton subject headings:
Blumenthal, Henriette Itta, 1904-1995.
Personal correspondence.
Weiss, Peter, 1916-1982--Correspondence.