The desert route to India, being the journals of four travellers by the great desert caravan route between Aleppo and Basra, 1745-1751,

By Carruthers, Douglas,. Nendeln, Liechtenstein, Kraus Reprint, 1967 . xxxvi, 196 p. , Reprint of the 1929 ed. 23 cm..

Unknown Mongolia; a record of travel and exploration in north-west Mongolia and Dzungaria,

By Carruthers, Douglas,. London, Hutchinson & co., 1913 . 2 v. , Paged continuously. 25 cm..