New York, 14 August 1942 - Internal museum documents Elodie Courter Osborn's letter to Alfred H. Barr Jr.
New York, 20 August 1942 - Internal museum documents Elodie Courter Osborn's letter to Dorothy Dudley
www.gregorysholette.com, 2011 - Article A Collectography of PAD/D Political Art Documentation and Distribution: A 1980s Activist Art and Networking Collective