Collection Anatolii Petrovich Vel'min Papers, 1940-1963 Repository Columbia University: Rare Book & Manuscript Library
Collection Ksenia Nikolaevna Rossolimo Papers, 1845-1952 Repository Columbia University: Rare Book & Manuscript Library
Collection Petr Evgrafovich and Evgraf Petrovich Kovalevskii Papers, 1917-1973 Repository Columbia University: Rare Book & Manuscript Library