1. 1857 Contributions to the natural history of the United States of America. Vol. 2 ? Embryology of the Turtle, pp. 643, Little, Brown and Co., Boston, Mass.
2. Development of Early Reptile Embryos in vitro
3. A Technique for Obtaining Turtle Eggs for Study
4. 1952 Handbook of Turtles. Cornell Univ. Press, Ithaca, New York.