Mexico, 21 December 1939 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 21 December 1939
Mexico, 10 July 1947 - Personal correspondence Juan Larrea's letter to Alfred H. Barr Jr., dated 10 July 1947
New York, 27 May 1964 - Photograph View of the exhibition Painting and Sculpture from the Museum Collection
14 June 1973 - Personal correspondence Roland Penrose's letter to Alfred H. Barr and Margaret Scolari Barr
Mexico, 4 October 1939 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 4 October 1939
Mexico City, 6 September 1947 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 6 September 1947