Perkins, Dana Lee. 1995. ?A Dendroecological Assessment Of Whitebark Pine In The Sawtooth Salmon River Region Idaho?. Department Of Renewable Natural Resources. Department Of Renewable Natural Resources. Tucson: University of Arizona.

Brown, Peter Mark. 1991. ?Dendrochronology And Fire History In A Stand Of Northern California Coast Redwood?. School Of Renewable Natural Resources. School Of Renewable Natural Resources. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=7747786571&sid=1&Fmt=2&clientld=43922&RQT=309&Vname=PDQ.

Swetnam, T. 1987. ?A Dendrochronological Assessment Of Western Spruce Budworm, Choristoneura Occidentalis Freeman, In The Southern Rocky Mountains?. School Of Renewable Natural Resources. School Of Renewable Natural Resources. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=753027921&sid=16&Fmt=2&clientId=43922&RQT=309&VName=PQD.