- Daterman, G. E., A. Rudinsky, and W. P. Nagel. 1965. Flight patterns of bark and timber beetles associated with coniferous forests of western Oregon. 46 p..
- Cowan, B. D., and W. P. Nagel. 1965. Predators of the Douglas-fir beetle (Dendroctonus pseudotsugae) . Oregon Agricultural Experiment Station, Technical Bulletin 86:1-32.
- Daterman, G. E., J. A. Rudinsky, and W. P. Nagel. 1965. Flight patterns of bark and timber beetles associated with coniferous forests of western Oregon. Oregon Agricultural Experiment Station, Technical Bulletin 87. 46 p.
- Davis, J. M., and R. H. Nagel. 1956. A technique for tagging large numbers of live adult insects with radioisotopes . Journal of Economic Entomology 49:210-211.
- Fitzgerald, T. D., and W. P. Nagel. 1970. Pre-emergence orientation of Medetera aldrichii (Dipt: Dolichopodidae) . Entomological Society of America, Annals 63:913-914.
- Fitzgerald, T. D., and W. P. Nagel. 1972. Oviposition and larval bark-surface orientation of Medetera aldrichii (Diptera: Dolichopodidae): response to a prey-liberated plant terpene . Entomological Society of America, Annals 65:328-330.
- Johnsey, R. L., W. P. Nagel, and J. A. Rudinsky. 1965. The Diptera Medetera aldrichii Wheeler (Dolichopodidae) and Lonchaea furnissi McAlpine (Lonchaeidae) associated with the Douglas-fir beetle in western Oregon and Washington . Canadian Entomologist 97:521-527.
- McCambridge, W. F., W. P. Nagel, and R. J. Kowal. 1958. Forest insect conditions in the Southeast during 1957. United States Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, Paper 93. 10 p.
- McGhehey, J. H., and W. P. Nagel. 1966. A technique for rearing larvae of Medetera aldrichii (Diptera: Dolichopodidae) . Entomological Society of America, Annals 59:290-292.
- McGhehey, J. H., and W. P. Nagel. 1967. Bark beetle mortality in precommercial herbicide thinnings of western hemlock . Journal of Economic Entomology 60:1572-1574.
- McGhehey, J. H., and W. P. Nagel. 1969. The biologies of Pseudohylesinus tsugae and P. grandis (Coleoptera: Scolytidae) in western hemlock. Canadian Entomologist 101:269-279.
- Nagel, R. H. 1953. Dispersion of radioactive Engelmann spruce beetles to trap logs . Rocky Mountain Conference of Entomologists, Report 24:32-34.
- Nagel, R. H. 1956. Chemical control of the fir engraver (Scolytus ventralis). United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, Research Note RM-23. 3 p.
- Nagel, R. H. 1964. Preventing metal corrosion from emulsifiable ethylene dibromide packaged for bark beetle control. United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, Research Note RM-26. 2 p.
- Nagel, R. H., and J. M. Davis. 1956. Results from studies on dispersal of the Engelmann spruce beetle in 1955 . Entomological Society of America, North Central Branch, Proceedings 11:20-21.
- Nagel, R. H., F. B. Knight, and D. McComb. 1956a. The trap-tree method for controlling Engelmann spruce beetles . Colorado-Wyoming Academy of Science 4:48-49.
- Nagel, R. H., F. B. Knight, and D. McComb. 1956b. The trap-tree method for controlling Engelmann spruce beetles . Entomological Society of America, North Central Branch, Proceedings 11:20.
- Nagel, R. H., F. B. Knight, and D. McComb. 1957. Trap tree method for controlling the Engelmann spruce beetle in Colorado . Journal of Forestry 55:894-898.
- Nagel, W. P. 1959. Forest insect conditions in the southeast during 1958. United States Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, Station Paper 100. 10 p.
- Nagel, W. P., and T. D. Fitzgerald. 1975. Medetera aldrichii larval feeding behavior and prey consumption (Dipt: Dolichopodidae) . Entomophaga 20:121-127.
- Randall, H., C. M. Nagel, and L. S. Wood. 1968. Dutch elm disease found in South Dakota . Plant Disease Reporter 52:349.
- Turnbow, R. H., R. T. Franklin, and W. P. Nagel. 1978. Prey consumption and longevity of adult Thanasimus dubius . Environmental Entomology 7:695-697.