Vol. 1 includes 63 reprints; v. 2, 33 reprints numbered 64-96 Vol. 2, by W.D. Matthews et al., has subtitle: Preliminary contributions in geology, paltology, archogy, botany, and zoology Title on covers and spines: Central Asiatic Expeditions, American Museum of Natural History : preliminary contributions reports (also in Chinese and Mongolian on covers) "Reprints from the American Museum bulletin and Novitates, and also one from the Proceedings of the Biological Society of Washington, of the years 1918-1925"--Vol. 1 "Reprints of Asiatic papers from the American Museum bulletin and Novitates, for the years 1926-1929"--Vol. 2 "Bibliography of Central Asiatic expeditions": v. 1, p. 5-31 Includes bibliographical references Index to place names [typescript] shelved in RBC v. 1. 1918-1925 -- v. 2. 1926-1929