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A distributional study of the amphibians of the Isthmus of Tehuantepec, Mexico
Vol 13, Page 19, Date 1960
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A new subspecies of slider turtle (Pseudemys scripta) from Coahuila, México
Vol 13, Page 73, Date 1960
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Descriptions of two new species of frogs, genus Ptychohyla. Studies of American hylid frogs, V
Vol 13, Page 349, Date 1961
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North American Recent soft-shelled turtles (Family Trionychidae)
Vol 13, Page 429, Date 1962-02-16