1. 1936 The mechanism of internal fertilization in Gambusia. Copeia, 1936, no. 1, pp. 45-53.
2. and 1936 Studies of the fishes of the order Cyprinodontes. XV. The characters and relationships of Furcipenis huberi and Alfaro cultratus. Univ. Mich. Mus. Zool. Occ. papers, no. 339.
3. 1914 Notes on the habits, morphology of the reproductive organs, and embryology of the viviparous fish Gambusia affinis. Bull. U. S. Bur. Fish., no. 33, pp. 177-190.