Northern Prairie Wildlife Research Center
Henshall apparently conducted some early fish studies in Montana. Two of his publications are listed below.
Henshall, J.A. 1894. List of the fishes of Montana. Univ. of Montana Bull. #34. Missoula. [Gives detailed descriptions of species of fish, habits, and habitats with general notes on locations]. Henshall, J.A. 1907. Culture of the Montana grayling. Bureau of fisheries document #628. 7 pp. [Brief history (1800s) of grayling, with species description, habits, habitat and locations found in Montana. Also has information on propagation].