The papers consist of correspondence, manuscripts, documents, and printed materials. Correspondence includes 3 letters from Mikhaĭl Karpovich, and letters from Khmelńit︠s︡kai︠a︡'s son Sergeĭ, a writer in the Soviet Union. Among the manuscripts is Khmelńit︠s︡kai︠a︡'s autobiography, which discusses her childhood in Odessa and her education; and her translation of the letters of William Frey, a Russian immigrant in Kansas in the 1870s.

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).