Correspondence, manuscripts, subject files and printed materials of Velḿin. The correspondence includes letters from Mark Aldanov, Mikhail Karpovich, Ekaterina Kuskova, Vasiliĭ Maklakov, Mikhail Taube, and Mark Weĭnbaum. Most of the manuscripts are by Velḿin himself and concern the Russian emigration in Poland, the 1917 Revolution and Civil War, and German concentration camps during World War II. The collection likewise contains Velḿin's diary (handwritten in eleven volumes) covering the 1900-1960 period. There are subject files devoted to Vasiliĭ Maklakov and to the activities of the Russian scouts, and there are numerous publications, such as journals, pamphlets, clippings and books.

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).