Roy Chapman Andrews
Roy Chapman Andrews pioneered an exploration of the Gobi Desert in 1922. It was the American Museum of Natural History's most ambitious project. The expeditions continued, accompanied by an army of scientists, until 1930 uncovering vast numbers of dinosaur fossils. After his final expedition he was handed the post of Director of the American Museum of Natural History., but was later asked to resign from the post as a result of his evident lack of skills as an administrator.
After 1930, for the next 60 years, Mongolia's fossil finds were reserved for Eastern Bloc scientists only. In 1990, however, Mongolia invited the American Museum of Natural History to return.