Two letters from Paul A. Freund, Harvard Law School
Ronald St. John Macdonald's correspondence with Sienho Yee and Wang Tieya
Letter from Lotte Lehmann to Ellen Ballon
Letter from Josef Hofmann to Ellen Ballon
Letter from Edna Ferber to Ellen Ballon, Sally Ryan, and Ralph Gustafson
Correspondence with Columbia University President Grayson Kirk regarding Kirk's memorial address for John F. Kennedy
Correspondence with Adolf Meyer
Correspondence sent by Florence Jessie Murray to Alexander Murray
Correspondence from Erwin Griswold, Dean, Harvard Law School
Correspondence between Theodore Lidz and Alexander Leighton
Correspondence between Movie Makers magazine and Alexander Leighton
Correspondence between Florence Jessie Murray and E.P. Dutton & Co., Inc. and the New Yorker magazine
Anna Eleanor Roosevelt's response to invitation from Ellen Ballon