Roosevelt published a paper through the American Museum of Natural History in 1934, describing a new species of fossil pronghorn that he and a boyhood friend, Joseph W. Burden, had found in a cave in southern Arizona.

[1][2] He attended Harvard College, where he wrote his senior thesis on some Nakhi (Naxi) manuscripts he had collected while visiting Western China at the border of Tibet.

Roosevelt earned the Silver Star, Purple Heart, and French Croix de Guerre for his war service.

While serving as the Director of the China National Aviation Corporation, he was killed in a plane crash in Hong Kong, on December 21, 1948.

[9] On April 12, 1944, he married Frances Blanche Webb,[10] an American Red Cross worker, at Blandford Forum.