The papers of Maslovskiĭ consist of correspondence, manuscripts, photographs, and subject files. Among the correspondents are Mark Aldanov, General Nikolaĭ I︠U︡denich, and many former Russian officers. Manuscripts consist largely of Maslovskiĭ's bound typescript memoirs"Nekotorye stranit︠s︡y moeĭ zhizni" (ca. 2,200 p.); the manuscript version of the first six volumes of the memoirs is also included, as is a memoir about his service in Persia in 1909-1914. Subject files include correspondence, manuscripts, and printed materials about his research on World War I, his book, General I︠U︡denich, and other topics.

The collection consists of correspondence, manuscripts, documents, subject files and printed materials. Although most of the correspondence is among family members (from 1921 to 1946), there are three folders of letters concerning the publication of Shebeko's memoirs. The manuscripts include Shebeko's diary from 1918-1919 as well as English, French and Russian versions of his memoirs which were published in French in 1936: "Souvenirs -- Essai historique sur les origines de la guerre de 1914." There are documents relating to rentals, mortgages and repairs of the Shebeko's homes, estates and apartments, primarily dating from 1910-1914. The subject files include Shebeko's reports on the Balkan situation in 1913 and 1914 and the Russkiĭ soedinennyi klub in Paris. Among the printed materials are clippings and a copy of the published version of Shebko's memoirs.