Natural History of the Racer Coluber constrictor

by Henry S. Fitch

1942. The amphibians and reptiles of Nebraska. Nebraska Conservation Bull. no. 24, 146 pp.

Hudson, R. G.

1949. A record length milk snake. Herpetologica, 5:47.

Hurter, J. H.

1911. Herpetology of Missouri. Trans. Acad. Sci. St. Louis, 20:59-274.

Inger, F. and Clark, P. J.

1943. Partition of the genus Coluber. Copeia, 1943(3):141-145.

Jackson, C. H. N.

1939. The analysis of an animal population. Jour. An. Ecology, 8:238-246.

King, W.