Graumlich, Lisa. 1985. ?Long-Term Records Of Temperature And Precipitation In The Pacific Northwest Derived From Tree Rings?. University of Washington. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=749026731&sid=1&Fmt=2&clientId=43922&RQT=309&VName=PQD.