J. Abbott: Narrative of a journey from Heraut to Khiva, Moscow, and St. Petersburgh, during the late Russian invasion of Khiva, with some account of the court of Khiva and the kingdom of Khaurism, vol.1 (1884)
J. Abbott: Narrative of a journey from Heraut to Khiva, Moscow, and St. Petersburgh, during the late Russian invasion of Khiva, with some account of the court of Khiva and the kingdom of Khaurism, vol.2 (1884)
O. Olufsen: Through the unknown Pamirs; the second Danish Pamir expedition, 1898-1899 (1904)
A. Vambery: The coming struggle for India: being an account of the encroachments of Russia in Central Asia, and of the difficulties sure to arise therefrom to England (1885)
