From May through October 1970 the food habits of the Rocky Mountain Whitefish, Prosopium williamsoni, were studied in conjunction with the National Park Service policy of increasing knowledge of the organisms found in Grand Teton National Park. Project Number 174.
Pontius, Richard W.
"Food Habits of the Rocky Mountain Whitefish, Prosopium williamsoni,"
Jackson Hole Research Station Annual Report: Vol. 1970
, Article 21.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1970/iss1/21