Correspondence, manuscripts, notes, and printed materials of Georgiĭ P. Benningsen, brother of E.P. Benningsen and, in the emigration, an associate of Vladimir Burt︠s︡ev. Much of the correspondence consists of letters to Georgiĭ Benningsen by Burt︠s︡ev (69 letters from the 1920s). Manuscripts include Benningsen's memoirs about Burt︠s︡ev, copies of Burt︠s︡ev's (apparently published) memoirs, and notes. Printed materials are chiefly clippings on various topics. There are also scattered issues of 1917 Russian newspapers ("Nash Vek," "Russkoe Slovo"), and an autographed copy of Burt︠s︡ev's 1919 edition of Griboedov's "Gore ot uma."

Papers of Petr S. Makhrov, consisting primarily of extensive manuscript memoirs. Emigrating to France, he became a leading figure in the "Soviet patriotic" movement during and after World War II. His memoirs, in thousands of pages, discuss all aspects of his career. The papers also include correspondence, documents, photographs, and printed materials. There are orders (prikazy) from World War I and the Civil War, and reports and telegrams from his time in Poland. There is a copy of "Russkie v Gallipoli" autographed by Wrangel, and a photograph album entitled "Russkai︠a︡ armii︠a︡ na Balkanakh." Also included is the 1841 report of the director of the Imperial Military Academy in St. Petersburg, General Sukhozanet.

Personal letters written by Phoenix to friends and associates, and letters which Phoenix collected as autograph specimens, ranging in date from 1554 (Melanchthon) to 1933 (Franklin D. Roosevelt). Over half of Phoenix's own letters are addressed to Josiah Collins Pumpelly (1839-1920), many others are to Henry Thayer Drowne (1822-1897). The material is dated from various places in the United States and Europe and contains accounts of Phoenix's travels and comments on yachting, books, the theater, and friends. There is a series of Presidential letters ranging from Washington to Franklin D. Roosevelt. Also, an engraved portrait of Phoenix.