Naturalist, explorer. Andrews spent his career on the staff of the American Museum of Natural History. He led numerous expeditions, most notably five to central Asia (1922--30), and became famous for his team's discovery in 1928 of 100-million-year-old dinosaur eggs in the Gobi desert (the first ever found). TLS, one page, 8.5 x 11, Central Asiatic Expeditions letterhead, February 11, 1929. A letter seeking funding from Rutherford Towner, Andrews writes, in part: “Last year at the very end of the season we discovered just what we have been looking for - a great new area of Pliocene strata the right age to contain the bones of primitive man if he existed in Mongolia…There is, moreover, what we believe to be a complete skeleton of our new monster. It is lying on its right side, with the hind limb exposed in a small ravine, and the fore leg in another, twenty-five feet away…In order to complete the Expedition satisfactorily we must have $100,000…If you feel that you can assist us this year I shall be very grateful for any amount. We need it badly.” In fine condition, with slight edge toning and the usual letter folds. R&R COA.