Mexico, 10 July 1947 - Personal correspondence Juan Larrea's letter to Alfred H. Barr Jr., dated 10 July 1947
Paris, 5 November 1947 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 5 November 1947
Mexico City, 6 September 1947 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 6 September 1947
New York, 31 July 1947 - Personal correspondence Alfred H. Barr Jr's letter to. a Bertha Slattery Lieberman
Paris, 30 May 1947 - Personal correspondence Daniel H. Kahnweiler’s letter to Alfred H. Barr on the symbolism of Picasso’s Guernica
