Архивы, музейные и частные собрания
Columbia University. Rare Book & Manuscript Library. Bakhmeteff Archive of Russian and East European Culture. New York.
Yale University. Beinecke Rare Book & Manuscript Library. New Haven, CT.
Yale University. Sterling Memorial Library. New Haven, CT.
The New York Public Library. W. Henry & A. Albert Berg Collection of English and American Literature. New York.
The Library of Congress. Collection of the Manuscript Division. Washington D. C.
Stanford University. Hoover Institution on War, Revolution and Peace. Hoover Institution Archives. Palo Alto.
Harvard University. Houghton Library. Cambridge, MA.
Glenn Horowitz Bookseller, Inc. New York.
‑Петербург.