Correspondence, manuscripts, documents, photographs, subject files and printed material of Russian émigré writer, journalist, and Kadet Party leader Ariadna Vladimirovna Tyrkova-Williams. The collection also contains material by her husband, Harold Williams, and her son, Arkadiĭ Borman.

Correspondence, manuscripts, documents, photographs, subject files, printed materials, and memorabilia of historian George Vernadsky (Georgii Vladimirovich Vernadskii; 1887-1973). Most of the collection consists of his personal and professional papers, circa 1918-1973. Sizable groups of materials also concern members of his family, especially his wife Nina (1884-1971); his father, scientist Vladimir I. Vernadskii (1863-1945); his mother Nataliia E. Vernadskaia (1860-1943); and his sister Nina V. Toll' (1898-circa 1976).

The papers comprise correspondence, writings, memoirs, personal documents, research notes, printed materials, photographs of Iurii Shevel'ov, prominent scholar, Slavic linguist, philologist, literary historian, and literary critic, longtime professor of Slavic philology at Columbia University.

The papers consist of correspondence, manuscripts, documents, subject files, photographs, a sound tape, and printed materials. There are many letters from Anton Kartashev; other correspondents include Mikhaĭl Karpovich, Philip Mosely, and Vasiliĭ Zenḱovskiĭ. There are manuscripts by Kartashev, Karpovich, and George Vernadsky, as well as by Novit︠s︡kiĭ himself on the Orthodox Church and the emigration. Subject files touch on his organizational activities. There are photographs of Novit︠s︡kiĭ with Dwight Eisenhower, Nelson Rockefeller, and Jacob Javits, and also of Zenḱovskiĭ. The sound tape is an interview with Novit︠s︡kiĭ on Voice of America about his father-in-law, Georgiĭ Shavelśkiĭ. Some of the materials concern Novit︠s︡kiĭ's brother, Evgeniĭ, and wife, Marii︠a︡.

Correspondence, manuscripts, lectures, lecture notes, and subject files of Russian-American historian Mikhail Mikhailovich Karpovich (1888-1959). Karpovich was an employee of the embassy of the Russian Provisional Government in Washington, D.C., Professor Emeritus of Russian History and Literature at Harvard University, and founding editor of Novyĭ zhurnal.

Correspondence, manuscripts, photographs, documents, subject files and printed materials of Sergei Grigor'evich Svatikov (1878/1880?-1942), Russian lawyer, historian, publicist, and public figure. The correspondence includes letters from Mark Aldanov, Vladimir Burtsev, Ivan Efremov, Georgii Grebenshchikov, Grigorii Lozinskii, Sergei Mel'gunov, Nikolai Rubakin, George Vernadsky and Mark Vishniak. There is a notebook that belonged to Vera Zasulich. Among the photographs are pictures of Prince Adam Jerzy Czartoryski, Sergei Mel'gunov, and Aleksander Wielopolski. The manuscripts include several by Svatikov as well as many notes, lists and bibliographical compendia relating to his oeuvre. The subject files cover such areas as the Russian Reading Hall in Heidelberg, the Turgenev Library in Paris, and the Russkii akademicheskii soiuz (Groupe academique russe), also in Paris. The printed materials include clippings, materials from the Institute d'ʹetudes slaves, and a number of books by Svatikov.