References:

Associated Press (2001). Scientists investigating volcanic swelling at Three Sisters. (Plate Tectonics) http://www.platetectonics.com/article.asp?a=25 . Retrieved April 10, 2002.

Associated Press (2001). Volcanic bulge has town excited. http://ajdubre.tripod.com/Physics/Sisters-Oregon-AP-52001.html . Retrieved April 22, 2002.

Dzurisin, D. (1992). Report: goedetic leveling as a tool fro studying restless volcanoes. (Cascades Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Monitoring/Bulletin1966/Chapter12/geodetic_leveling.html . Retrieved April 11, 2002.

Endo, E. & Murray, T. (1992). Report: a real-time seismic-amplitude measurement system (RSAM). (Cascades Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Monitoring/Bulletin1966/Chapter1/abstract.html . Retrieved April 11, 2002.

Ewert, A. & Swanson, D. (1992). Monitoring volcanoes: techniques and strategies used by the staff of the Cascade Volcano Observatory, 1980-1990. (Cascade Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Monitoring/Bulletin1966/introduction.html . Retrieved April 11, 2002.

Fukuchi, Tetsuo (1999).  Three Sisters, Oregon. (Tet's Mountain Corner) http://www.geocities.com/Yosemite/1985/ssister.html . Retrieved April 10, 2002.

Jacobs, J. (1996). The volcanoes of the Cascades. http://www.jqjacobs.net/writing/volcanoc.html . Retrieved April 10, 2002.

National Aeronautics and Space Administration (NASA). Dormant volcanoes show signs of life. (Jet Propulsion Laboratory - California Institute of Technology) http://www.jpl.nasa.gov/releases/2002/release_2002_85.html . Retrieved April 18, 2002.

United States Department of Agriculture - Forest Service (USDA - FS) 2002. Geologists monitor uplift at Three Sisters. (Deschutes and Ochoco National Forest Website, USDA-FS) http://www.fs.fed.us/r6/centraloregon/mediainfo/news/010508uplift.html . Retrieved April 10, 2002.

United States Department of Agriculture - Forest Service (USDA - FS) 2002. Three Sisters wilderness AQRV description. (Pacific Northwest Air Resource Program, USDA -FS) http://www.fs.fed.us/r6/aq/aqrv_thr.htm . Retrieved April 10, 2002.

United States Geologic Survey (USGS) 2002a. Description: Central Oregon High Cascades. (Cascade Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Volcanoes/Oregon/HighCascades/description_high_cascades.html . Retrieved April 11, 2002.

United States Geologic Survey (USGS) 2002b. Description: InSAR - interferometric synthetic aperature radar satellite radar interferometry. (Cascade Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Monitoring/InSAR/description_InSAR.html . Retrieved April 11, 2002.

United States Geologic Survey (USGS) 2002c. Description: Juan de Fuca volcanics. (Cascade Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Volcanoes/JuanDeFucaRidge/description_juan_de_fuca.html . Retrieved April 10, 2002.

United States Geologic Survey (USGS) 2002d. Description: Three Sisters Volcanoes, Oregon. (Cascade Volcano Observatory, USGS) http://vulcan.wr.usgs.gov/Volcanoes/Sisters/description_three_sisters.html . Retrieved April 10, 2002.

United States Geologic Survey (USGS) 2002e. Ground uplift in Oregon Cascades is tipoff to rising magma. (Hawaiian Volcano Observatory, USGS) http://hvo.wr.usgs.gov/volcanowatch/2001/01_10_11.html . Retrieved April 10, 2002.

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