Manuscript letter to Kineton Parkes, 1922, in which Nadelman discusses his sculpture and his "cubist" discoveries. Manuscript and typescript drafts for Letter to the Editor (Henry Goddard Leach) on "Is Cubism Pure?" (published in THE FORUM, July 1925).
Nadelman manuscript letter to Kineton Parkes is in French.
MoMA: Permission necessary to use collection for publication purposes.