Mexico City, 26 September 1968 - Institutional correspondence Óscar Urrutia's telegram to Carol K. Uht
Paris, 1955 - Photograph Women working in front of Guernica in the exhibition Picasso at the Musée des Arts Décoratifs
2 March 1974 - Institutional correspondence A letter from Karl Denim, S. S. Kush and Joshua Jericho in defence of Tony Shafrazi