Chicago, 21 February 1955 - Management of reproduction rights Marilyn Vaughan's letter to Pablo Picasso
Paris, 29 September 1955 - Institutional correspondence Daniel-Henry Kahnweiler's letter to Robert Giron
Amsterdam, 11 October 1955 - Institutional correspondence Willem Sandberg's letter to Daniel-Henry Kahnweiler, dated 11 October 1955
Amsterdam, 8 November 1955 - Institutional correspondence Willem Sandberg's letter to Alexander Calder, dated 8 November 1955
Brussels, 10 November 1955 - Institutional correspondence Robert Giron's letter to Willem Sandberg, dated 10 November 1955
Amsterdam, 30 November 1955 - Institutional correspondence Willem Sandberg's letter to Alexander Calder, dated 30 November 1955
Amsterdam, 2 December 1955 - Personal correspondence Willem Sandberg's letter to Maurice Lefebvre-Foinet, dated 2 December 1955
Amsterdam, 3 December 1955 - Institutional correspondence Willem Sandberg's letter to Dora Maar, dated 3 December 1955
Paris, 5 December 1955 - Institutional correspondence Maurice Lefebvre-Foinet's letter to Willem Sandberg
Amsterdam, 9 December 1955 - Personal correspondence Willem Sandberg's letter to Maurice Lefebvre-Foinet, dated 9 December 1955
Zurich, 12 December 1955 - Institutional correspondence A letter from Klaus Herdeg to Willem Sandberg
Amsterdam, 16 December 1955 - Institutional correspondence Willem Sandberg's letter to Dora Maar, dated 16 December 1955
Amsterdam, 27 December 1955 - Institutional correspondence Willem Sandberg's letter to l'Association Française d'Action Artistique
Paris, September 7, 1955 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated September 7, 1955
Meudon, 19 November 1955 - Institutional correspondence Nelly Van Doesburg's letter to Louise Boyer, dated 19 November 1955
Meudon, 29 December 1955 - Institutional correspondence Nelly Van Doesburg's letter to Louise Boyer, dated 29 December 1955
Minneapolis, 18 January 1962 - Institutional correspondence Wayne W. Andersen's letter to Nelson Rockefeller
Tokyo, 31 August 1962 - Institutional correspondence Akira Jin's letter to Carol K. Uht, dated 31 August 1962
Tokyo, 21 November 1962 - Institutional correspondence Akira Jin's letter to Carol K. Uht, dated 21 November 1962
Paris, June-July 1955 - Institutional correspondence Letters from José Rojas Moreno to Alberto Martín-Artajo Álvarez