William J. Bryan
El idealismo de Edwin Elmore
Paul Morand
E. D. Morel - Pedro S. Zulen
Krassin
El sumo cicerone del foro romano
Carta a Samuel Glusberg, 4/7/1928
Carta a Bertha Molina (Ruth) [2/1916]
Carta a Bertha Molina (Ruth),16/4/1916
Carta a Bertha Molina (Ruth), 19/5/1916
Carta a Bertha Molina (Ruth), 1/6/1916
Carta a Bertha Molina (Ruth), 17/9/1916
Carta a Bertha Molina (Ruth), 11/10/1916
Carta a Bertha Molina (Ruth), 6/3/1920
Tarjeta Postal a Bertha Molina (Ruth), 3/8/1920
Carta a Emilio Pettoruti, 10/10/1927
Carta a Samuel Glusberg, 7/11/1929
Carta a Ricardo Vegas García, 5/11/[1924]
Carta a Ricardo Vegas García, 25/3/1925
Carta a Ricardo Vegas García, 6/4/1925
Carta a Ricardo Vegas García, 11/5/1925
Carta a Ricardo Vegas García, 3/6/1925
Carta a Ricardo Vegas García, 23/11/1925
"Dedalus" o la adolescencia de James Joyce
Miguel Arzibachev
Sergio Essenin
Gomez Carrillo
Tres libros de Panait Istrati sobre la U.R.S.S.
La aventura de Tristán Marof [Recorte de prensa]
Panait Istrati
Carta a Bertha Molina (Ruth), 7/5/1916
Carta a Bertha Molina (Ruth), 7/6/1916
Carta a Bertha Molina (Ruth), 8/6/1916
Carta a Bertha Molina (Ruth), 13/7/1916
Carta a Bertha Molina (Ruth), 31/8/1916
Carta a Bertha Molina (Ruth), 21/11/1916
Carta a Bertha Molina (Ruth), 30/6/1920
Carta a Bertha Molina (Ruth), 16/10/1920
Tarjeta Postal a Ricardo Martínez de la Torre, 6/7/1920
Carta a Waldo Frank, 10/12/1928
Carta a Ricardo Vegas García, 20/1/1925
Carta a Bertha Molina (Ruth), [1916]
Carta a Bertha Molina (Ruth), 4/2/1916
Carta a Bertha Molina (Ruth), 2/4/1916
Carta a Bertha Molina (Ruth), 11/4/1916
Carta a Bertha Molina (Ruth), 1/5/1916
Carta a Ricardo Vegas García, 12/11/[1924]
Carta a Ricardo Vegas García, [9/1924]
Carta a Ricardo Vegas García, [5/1925]
Carta a Ricardo Vegas García, [9/1925]