Dean earned his tenure at Columbia by 1904, the same year he was hired by the Metropolitan as guest curator. He rapidly rose to honorary curator, and then to department head as the Arms & Armor department was formally established in [[1912]]. Dean made a number of trips to Japan, Russia, Alaska, and elsewhere, founding the Department of Reptiles and Fishes at the American Museum of Natural History even as he continued to work at both the Metropolitan and Columbia. His last trip to Japan was in 1917, during which time he met with numerous dealers and collectors, and added considerably to the Metropolitan's collection. | Dean earned his tenure at Columbia by 1904, the same year he was hired by the Metropolitan as guest curator. He rapidly rose to honorary curator, and then to department head as the Arms & Armor department was formally established in [[1912]]. Dean made a number of trips to Japan, Russia, Alaska, and elsewhere, founding the Department of Reptiles and Fishes at the American Museum of Natural History even as he continued to work at both the Metropolitan and Columbia. His last trip to Japan was in 1917, during which time he met with numerous dealers and collectors, and added considerably to the Metropolitan's collection. |