Correspondence, manuscripts, diaries, documents, subject files and printed materials of Vorobév. Following the 1917 Revolution, Vorobév emigrated to Constantinople, Belgrade, and eventually to Nice. The correspondence dates from 1920 to 1950. The manuscripts primarily concern ethnography, agriculture and horticulture in the Black Sea region, and approximately half the manuscripts are by Vorobév himself. In addition, there are several diaries (dating from the 1940's) in which Vorobév recorded his professional activities. The documents include a number of contracts and receipts. The subject files cover a variety of topics including antisemitism, flora in the Kuban River region, notes on the "dance of death" and the Obshchestvo okhranenii︠a︡ russkikh kult́urnykh t︠s︡ennosteĭ (the Society for the Preservation of Russian Cultural Antiquity) in Paris, of which Vorobév was secretary. Among the printed materials are articles, clippings and maps.

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.".

Correspondence, manuscripts, documents, photographs, subject files and printed materials of Vostrotin. The correspondence dates from 1919 to 1942. The manuscripts are chiefly by Vostrotin, and primarily consist of memoirs. Among the subjects he treats in his memoirs are: the building of the Chinese-Eastern railroad, gold mining along the Eniseĭ River in Siberia, the creation of the North Sea route, various Siberian explorations, the Civil War in the Far East, and Russian emigration to the Far East, with reference to the Russian newspaper "Russkiĭ golos" in Harbin, of which Vostrotin was editor of the 1920's. There are a few documents and subject files relating to the same topics. The printed materials contain several dozen maps.