Box BAR Shared MS 1
Khvol'son, Orest Danilovich, 1925
(handwritten copy with Andrenko explanatory note)
Box BAR Shared MS 1
Tsiolkovskaia, Liubov' Konstantinovna, 1937
Box BAR Shared MS 1
Tsiolkovskii, Konstantin Eduardovich, 1933-1934
(two postcards and a fragment of typed letter to L. L. Andrenko and A. V. Andrenko)
Box BAR Shared MS 1
Correspondence and documents related to Tsiolkovskii anniversary, 1932
Box BAR Shared MS 1
Note by Andrenko describing his relationships with Tsiolkovskii, 1951