- Hensill, G. S. 1936. Some olfactory responses of the mountain pine beetle, (Dendroctonus monticolae Hopk.). United States Department of Agriculture, Bureau of Entomology, Forest Insect Laboratory, Berkeley, California.
- Struble, G. R., and G. S. Hensill. 1935. Oil control experiments directed against D. brevicomis and D. monticolae, and flatheads, season of 1934. United States Department of Agriculture, Bureau of Entomology, Berkeley, California.