Manuscript Collections in the Columbia University Libraries: A Descriptive List (New York, 1959) is brief and selective.
Although the bulk of the Russian-related archival materials of the Columbia University Libraries is in the Bakhmeteff Archive, the Manuscript Department (and other divisions) also have significant holdings.
Many collections in the Manuscript Department hold a small amount of Russian-related material (e.g., a calling card with brief signed note of P. Chaikovskii [Tchaikovsky]). Time did not permit identification of all such scattered holdings.