Amsterdam and Brussels, 1956 - Exhibition catalogue Guernica: avec 60 études et variantesGuernica: met 60 studies et varianten
Paris, 16 December 1952 - Personal correspondence Pablo Picasso's letter to Daniel-Henry Kahnweiler, dated 16 December 1952
Vallauris, 7 June 1953 - Personal correspondence Pablo Picasso's letter to Daniel-Henry Kahnweiler, dated 7 June 1953