Ravenstein, E. G. The Russians on the Amur; its discovery, conquest, and colonization, with a description of the country, its inhabitants, productions, and commercial capabilities; and personal accounts of Russian travellers.

London: Trübner and co., 1861. xx, 467 pp. Illustrations. Plates. Maps. 8o.

Reid, Arnot. From Peking to Petersburg.

London: E. Arnold, 1899. vi, (2), 300 pp. Frontispiece. Map. 8o.

Russia's march towards India. By "An Indian officer."

London: Sampson Low, Marston & company, 1894. 2 vols. Map. 8o.

Contains an account of Russia's advance towards India from the earliest times up to the present day.

Semenov, Petr Petrovich. La Russie extra-européenne et polaire Sibérie, Caucase, Asie centrale, Extrême-Nord.

Paris: P. Dupont, 1900. (4) 242 pp. Folded map. 8o. (Commission impériale de Russie à l'Exposition universelle de 1900.)

Skrine, Francis Henry. The expansion of Russia, 1815-1900.