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 collection consists of correspondence, manuscripts and memoirs, documents, minutes of meetings, financial records, photographs, maps, and printed materials. Cataloged correspondents include Grand Duke Nikolaĭ Nikolaevich and General Petr Wrangel. Manuscripts include memoirs by Konstantin Rozen on his military service from 1902-1917, and a memoir by F. N. Bui︠a︡k entitled "Vospominanii︠a︡ starogo kavalergarda 1885-1902." Subject files are on Kadry Voĭsk Ofit︠s︡erov (Cadres of Military Officers) in Belgrade and Soi︠u︡z Russkikh Ofit︠s︡erov (Union of Russian Officers), emigre Russian military organizations. Documents concern Rozen's family and estate in Vitebsk province. Minutes of meetings concern the Kavalergardskai︠a︡ Semi︠́a︡ (Cavalry Guard Family). Financial records cover the fundraising activities of Soi︠u︡z Russkikh Ofit︠s︡erov and the estate. Photographs are of the estate, and maps are of the Vitebsk region and the estate grounds. Printed materials concern the estate and the above mentioned military organizations, and include copies of the news bulletin"Vestnik Kavalergardskoĭ Semí.".

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.".