Manuscripts of Boris Petrovich Aprelev and his brother Iurii (Georgii). Included is a typed copy of Boris Aprelev's diary for 1915-1919, covering his service at Russian Imperial military headquarters, and his service in the Far East and in the Mediterranean. Also included are the memoirs of Iurii Aprelev (handwritten manuscript and typed copy) for 1917-1919 and handwritten and typed copies of a letter from Iurii to Boris Aprelev, describing the former's journey to the south in late 1917 to join the anti-Bolshevik forces.