- Hobbs, E. L., and D. G. Holland. 1983. Evaluation of mountain pine beetle and dwarf mistletoe damage in Dark Canyon, Uinta-Ouray Indian Reservation, Utah. United States Department of Agriculture, Forest Service, Intermountain Region, State and Private Forestry, Forest Pest Management Report 83-14. 12 p.
- Hobbs, A. J. 1985. Effects of air-photo scale on early detection of mountain pine beetle infestations . Forestry Abstracts 46:636-637.