Davis, J., Bigelow, J., Gray, F. C., & Annin, W. B. (1817). Report of a committee of the Linnaean Society of New England, relative to a large marine animal, supposed to be a serpent, seen near Cape Ann, Massachusetts, in August, 1817. Boston:: Published by Cummings and Hilliard, no. 1, Cornhill. Univ. Press--Hilliard and Metcalf..

Davis, John, Jacob Bigelow, Francis Calley Gray, and William B. Annin. Report of a Committee of the Linnaean Society of New England, Relative to a Large Marine Animal, Supposed to Be a Serpent, Seen Near Cape Ann, Massachusetts, in August, 1817. Boston:: Published by Cummings and Hilliard, no. 1, Cornhill. Univ. Press--Hilliard and Metcalf., 1817.

Davis, John, Jacob Bigelow, Francis Calley Gray, and William B. Annin. Report of a Committee of the Linnaean Society of New England, Relative to a Large Marine Animal, Supposed to Be a Serpent, Seen Near Cape Ann, Massachusetts, in August, 1817. Boston:: Published by Cummings and Hilliard, no. 1, Cornhill. Univ. Press--Hilliard and Metcalf., 1817.