Papers, 1837–1959, 179 items. Includes a typed copy of a letter, 19 March 1873, from U.S. Minister James L. Orr (1822–1873) in St. Petersburg to his brother Jehu. The letter describes his journey to Russia from the U.S. and his first meeting with the tsar. Orr died in St. Petersburg on 5 May. Unpublished guide.