Collection of Forty Original Photos from the 1908-1910 Ryabushinsky Expedition to Kamchatka, Showing the Expedition Members Conducting Experiments, Bathing in Thermal Springs, Driving Dog Sleds, Resting by their Yurt, Posing at a Winter Base, etc.; also with the Photos of Local Villages (Milkovo, Sharomi, Pushchino, Ganaly, Klyuch), Mountains (Mishennaya Sopka), Rivers (Ozernaya, Kamchatka, Kroda-Kyg, Andrianovka), Ranges (Valaginsky, Karakuli), etc. 1908-1910.