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The expedition's scientific staff, People in photograph, seated left to right: - L.B. Roberts (Chief Topographer), Roy Chapman Andrews (Leader and Zoologist), Walter Granger (Chief Palaeontologist), Frederick K. Morris (Geologist), Charles P Berkey (Chief Zoologist), J. McKenzie Young (Motor Transport). Standing left to right: - H.O. Robinson (Assistant Topographer), George Oleson (Assistant in Palaeontology), Ralph W. Chaney (Palaeontolist), F.B. Butler (Assistant Topographer), N.C. Nelson (Archaeologist), Harold H. Loucks (Surgeon), Norman G. Lovell (Motor Transport), J.B. Shackelsford (Cinematographer), Mongolia, 1925. (Photo by American Museum of Natural History/Royal Geographical Society via Getty Images)