1. 1915 Revision of the pocket gophers of the genus Thomomys. U. S. Biological Survey, North American Fauna no. 39.
2. 1803 In Spallanzani's tracts on the natural history of animals and vegetables. Trans. by J. G. Dalyell, 2nd ed., pp. 367-371. Edinburgh.
3. 1921 Insect transformation, p. 35 ff. London.
4. Studies of normal moult and of artifically induced regeneration of pelage in peromyscus