[2] He persuaded Ralph Nicholson Ellis (1908–1945) to will his collection of books and papers to the University of Kansas.
)[4] Hall was the author or co-author of more than 340 articles[1] in numerous journals, including Journal of Mammalogy, The Auk, The Condor, The Wilson Bulletin, Proceedings of the Biological Society of Washington, Canadian Field-Naturalist, Outdoor Life, Annals and Magazine of Natural History, Mammalia, The American Naturalist, Zeitschrift für Säugetierkunde [de], Journal of Dental Research, Pacific Rural Press, and The Great Basin Naturalist.
In addition to numerous rodent subspecies, he described the vesper bat species Myotis elegans, the extinct skunk genus Martinogale, (with Gilmore) the Alaska marmot (Marmota broweri), (with Gilmore) the Saint Lawrence Island shrew (Sorex jacksoni), and (with Jones) the Cuban yellow bat (Lasiurus insularis).
Hall's monograph Geographic Variation among Brown and Grizzly Bears (Ursus arctos) in North America (1984) fundamentally changed the taxonomy of North American brown bears, limiting the number of taxa to eight subspecies.
[10] Hall writes "What, then, are the chances of survival of the Caucasians in North America if they permit the infiltration of the Oriental subspecies of man from the larger land mass of Asia?