2004 - Photograph Maya Picasso and Diana Widmeyer Picasso contemplate the Guernica tapestry at Atelier Picasso, Paris
Philadelphia, 3 May 1939 - Institutional correspondence The Medical Bureau and North American Committee's letter to the Exhibition Committee
1 December 1945 - Institutional correspondence Claude Jaeger's letter to Pablo Picasso with an enclosed letter from Celeste Negarville