The collection consists of correspondence, manuscripts, memoirs, minutes of meetings, documents, maps, photographs, and printed materials, mostly relating to World War I. Correspondence, mostly to Owie, includes a letter from Grand Duke Gavriĭl Konstantinovich. Memoirs are by Sergeĭ Konoplev concerning World War I, and manuscripts appear to be by Owie on the war and anti-Communist topics. Minutes are from the Society of Officers of the 3rd Infantry Regiment of the Life Guard (Leĭb-Gvardiĭ 3-iĭ strelkovyĭ polk). Maps, documents, and photographs deal mostly with Owie's service during World War I. Among the photographs is one of Nicholas II from 1913.

The bulk of the collection concerns the last three decades of the Regiment's existence and the emigration. Cataloged items consist of 3 photographs of Tsar Nicholas II and a receipt signed by one Captain Lanta, dated 1720. The correspondence is almost all after 1917. The manuscripts include a history of the Regiment from its formation and some other historical pieces by Viktor I. Meshchaninov. Most of the other manuscripts -- chiefly officers' memoirs -- concern the period of WWI, the Revolution, and the Civil War. Of other materials relating to the Imperial epoch, mention may be made of the lists of members of the Regiment since its formation compiled by some regimental historian; biographical sketches of many officers; field orders, topographical maps, certificates awarding medals, etc. The Association of former officers generated much material: accounts, minutes, souvenirs of commemorative dinners, etc. A rich store of photographs forms part of the collection. These include both individual and group portraits of members of the Regiment and of the Imperial family. Especially fine photos of the last 2 tsars, their families, and various urban landscapes are found in the album "Photographies du comte Nostitz.".

in 1792-1793. There are documents relating to several members of the Beloselśkiĭ-Belozerskiĭ family. The part of the collection concerning the Horse Guards primarily relates to emigre activities in Europe and America during the 1930s. The materials include manuscripts for a history of the Guards, biographical sketches, minutes, newsletters, orders and several hundred photographs, many of which date back to the mid 19th century. Among the printed materials are journals, illustrations and a number of scrapbooks. The collection also contains several dozen oversized albums, illustrations, documents and photographs.