Carta a Ernesto Reyna, 26/1/1930
Carta a Enrique Bustamante y Ballivián, 15/10/1927
Carta a Emilio Roig de Leuchsenring, 30/6/1929
Carta a Emilio Pettoruti,9/5/1927
Carta a Carlos Chávez Sánchez, 3/5/1929
Carta a Bertha Molina (Ruth), 8/6/1916
Carta a Bertha Molina (Ruth), 30/6/1920
Carta a Bertha Molina (Ruth), 1-8-1916
Carta a Bertha Molina (Ruth), 16/10/1920
Carta a Bertha Molina (Ruth), 11/8/1916
Carta a Bertha Molina (Ruth), 11/6/1916
Carta a Bertha Molina (Ruth), 11/10/1916
Carta a Bertha Molina (Ruth), 1/6/1916
Cablegrama de Jaime L. Morenza, 11/7/1928