Paris, 5 July 1955 - Institutional correspondence A letter from François Mathey to the director of the Gesellschaft der Freunde junger Kunst Baden-Baden
1955 - Internal museum documents A list of Picasso's works, compiled at his house on rue des Grands-Augustins, Paris
3 June 1955 - Internal museum documents A list with three Picasso works for the exhibition at the Musée des Arts Décoratifs
Mainz, 20 July 1955 - Institutional correspondence A letter from J. Mougin to Jacques Guerin, dated 20 July 1955
Mainz, 18 October 1955 - Institutional correspondence J. Mougin's letter to Jacques Guerin, dated 18 October 1955