Collection includes three chapters apparently from the manuscript of a book by Efremov on the causes of the Revolution of 1917 in Russia; memoranda, notes, and clippings on attempts made in the 1920s and 1930s to bring about a rapprochement between the Russian Orthodox, Catholic, and Anglican churches (these materials were prepared for the Carnegie Endowment, apparently in 1935-36); and a 1917 menu from a restaurant in Petrograd.