- Sampson, G. R., D. R. Betters, and R. W. Brenner. 1980. Mountain pine beetle, timber management and timber industry in Colorado's Front Range: production and marketing alternatives. United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, Resource Bulletin RM-3. 8 p.
- Sampson, G. R., D. R. Betters, and R. Love. 1980. Processing potential for insect-infected Front Range forests. United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, Resource Bulletin RM-1. ii + 4 p.