Mexico, 10 July 1947 - Personal correspondence Juan Larrea's letter to Alfred H. Barr Jr., dated 10 July 1947
Mexico City, 21 December 1947 - Institutional correspondence Juan Larrea's letter to Alfred H. Barr Jr., dated 21 December 1947
Mexico City, 6 September 1947 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 6 September 1947