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].