2 March 1974 - Institutional correspondence A letter from Karl Denim, S. S. Kush and Joshua Jericho in defence of Tony Shafrazi
Saint Louis, 6 April 1940 - Institutional correspondence James B. Musick's letter to Pablo Picasso, dated 6 April 1940
Saint Louis, 16 April 1940 - Institutional correspondence James B. Musick's letter to Pablo Picasso, dated 16 April 1940