6 books
Evidence Bearing on Tooth-Cusp Development (Classic Reprint)
Revision of the Miocene and Pliocene Equidae of North America
Warm-Blooded Vertebrates. Part I
Proper Generic Names Of Miocene Horses (1904)
Descriptions Of Two New Species Of Pleistocene Ruminants Of The Genera Ovibos And Bootherium, With Notes On The Latter Genus (1908)
An Extinct American Eland (1913)