CARRUTHERS, Douglas (1882-1962). Unknown Mongolia. A Record of Travel and Exploration in North-West Mongolia and Dzungaria. London: Hutchinson & Co., 1913. 2 volumes, 8vo (235 x 158 mm). 6 maps and diagrams (4 folding), 162 photo illustrations on 128 plates (including 11 folding panoramas). Publisher's blue gilt-lettered cloth (minor foxing on fore-edge to vol. I).FIRST EDITION. Carruthers was one of the very great naturalist-explorers. In 1910, he set out to explore the stony desert of Outer Mongolia, then part of the old Chinese empire, during the last years of the Manchu dynasty. The expedition, which took eleven months, crossed Siberia and went up the Yenesei river to its source. A FINE COPY. Yakushi (1994) C65; Czech (Asia) p.45.