Hay dirige la publication American Geologist de 1902 à 1905. Il fait notamment paraître Bibliography and Catalogue of the Fossil Vertebrata of North America (1902), The Fossil Turtles of North America (1908), Pleistocene Mammals of Iowa (1914), Pleistocene and its Vertebrates, East Mississippi River (1923), Pleistocene and its Vertebrates, Middle Region (1927), Second Bibliography and Catalogue of the Fossil Vertebrata of Norty America (1929-1930).
Source
(en) Allen G. Debus (dir.) (1968). World Who’s Who in Science. A Biographical Dictionary of Notable Scientists from Antiquity to the Present. Marquis-Who’s Who (Chicago) : xvi + 1855 p.