Manuscripts and photographs of Boris Georgievich Berg. There is an unpublished biography by B. G. Berg of Fedor Fedorovich Berg, "Feld́marshal Graf F. F. Berg i ego sovreminniki." The memoirs of B. G. Berg cover his youth, theatre career, World War I and its aftermath, and the emigration in France and the United States. There are also photographs of members of the Berg family.