- Dewey, J. E., H. E. Meyer, R. C. Lood, and S. Kohler. 1974. A pine butterfly impact survey on the Bitterroot National Forest and state of Montana federal lands, 1973. United States Department of Agriculture, Forest Service, Division of State and Private Forestry, Northern Region, Report 1:74-12. 4 p.
- Hamel, D. R., M. D. McGregor, R. C. Lood, and H. E. Meyer. 1975. Evaluation of mountain pine beetle infestations, Snell Creek and Warland Peak Areas, Fisher River District, Kootenai National Forest, Montana. United States Department of Agriculture, Forest Service, State and Private Forestry, Northern Region, Report No. 75-21. 9 p.
- Hamel, D. R., R. D. Oakes, M. D. McGregor, and R. C. Lood. 1975. Evaluation of Douglas-fir beetle infestations, North Fork, Clearwater River drainage, Idaho. United States Department of Agriculture, Forest Service, Northern Region, State and Private Forestry, Insect and DiseaseReport 75-11. 8 p.
- McGregor, M. D., W. F. Bousfield, R. C. Lood, and H. E. Meyer. 1974. Mountain pine beetle impact survey. Drainage, Lolo National Forest, and state and private lands, Montana. United States Department of Agriculture, Forest Service, Northern Region, Insect and Disease Report 74. 8 p.
- McGregor, M. D., D. R. Hamel, and R. C. Lood. 1976. Evaluation of mountain pine beetle infestation, Gallatin Ranger District, Gallatin National Forest, Montana, 1975. United States Department of Agriculture, Forest Service, Northern Region, Forest Environment Protection, Report 76-5. 11 p.
- McGregor, M. D., D. R. Hamel, R. C. Lood, and H. E. Meyer. 1975. Status of mountain pine beetle infestations: Glacier National Park, 1974. United States Department of Agriculture, Forest Service, Northern Region, State and Private Forestry, Report NR-75-10. 7 p.
- McGregor, M. D., D. R. Hamel, R. C. Lood, H. E. Meyer, and S. Kohler. 1975. Evaluation of mountain pine beetle infestations, Lazier and Meadow Creek Drainages, Plains District, Lolo National Forest, Montana, 1975. United States Department of Agriculture, Forest Service, Northern Region, Report 75-17. 11 p.
- McGregor, M. D., D. R. Hamel, H. E. Meyer, and R. C. Lood. 1975a. Evaluation of a mountain pine beetle infestation, Calx-Tamarak Creek Drainage, Fisher River Ranger District, Kootenai National Forest, Montana, 1974. United States Department of Agriculture, Forest Service, Northern Region, Forest Environment Protection, Report NR-75-2. 9 p.
- McGregor, M. D., and R. C. Lood. 1970. Evaluation of bark beetle infestations, Judith, Musselshell, and Belt Creek Ranger Districts, Lewis and Clark National Forest, Montana. United States Department of Agriculture, Forest Service, Northern Region. 4 p.
- McGregor, M. D., and R. C. Lood. 1973. Status of bark beetle infestations in secondgrowth ponderosa pine stands, Bureau of Land Management lands, Garbet Mountains, Montana. United States Department of Agriculture, Forest Service, Northern Region, Report 73-25. 5 p.