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1909. Revision of the mice of the American genus Peromyscus. N. Amer. Fauna, 28:1-267, 8 pls., 12 figs. in text, April 17, 1909.
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1912. Mammals from western Venezuela and eastern Colombia. Field Mus. Nat. Hist., Publ. no. 155, zoöl. ser., 10:33-66, pls. 4, 5, January 10, 1912.
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1947. Owl predation in Pennsylvania, with notes on the small mammals of Delaware County. Jour. Mamm., 28:137-147, June 1, 1947.
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1921. Notes on the genetic behavior of certain characters in the polecat, ferret, and in polecat-ferret hybrids. Jour. Genetics, 11:99-115, 2 pls., 5 figs. in text, September, 1921.