MUMM, A.L. (1859-1927). Five Months in the Himalaya. A Record of Mountain Travel in Garhwal and Kashmir. London: Edward Arnold [and] New York: Longmans Green, 1909. 8vo. 2 folding maps, 4 folding photo panoramas, 24 photogravure plates and numerous in-text half-tones. -- GREGORY, John Walter (1864-1932), C.J. GREGORY. To the Alps of Chinese Tibet. An account of a journey of exploration up to and among the snow-clad mountains of the Tibetan Frontier. London: Seeley, Service & Co., 1923. 8vo. Frontispiece, folding map traced in color, numerous plates, sketch maps and diagrams. -- VISSER-HOOFT, Jenny (1888-1939). Among the Karakoram Glaciers in 1925. London: Edward Arnold, 1926. 8vo. Frontispiece portrait, 2 maps (one folding map), numerous plates. -- All FIRST EDITIONS, all in original publishers cloth, condition generally good.