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] . 2003. “A Comparative Study Of Soil Disturbance From Uprooted Trees, And Mound And Pit Decay In Puerto Rico And Colorado”. Institute For The Study Of Planet Earth. Institute For The Study Of Planet Earth. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=765017541&sid=9&Fmt=2&clientId=43922&RQT=309&VName=PQD.
. 2003. “Stand Replacing Fire History And Aspen Ecology In The Upper Rio Grande Basin”. Department Of Renewable Natural Resources. Department Of Renewable Natural Resources. Tucson: University of Arizona.
Margolis, Ellis Quinn_Stand Replacing Fire History and Aspen Ecology in the Upper Rio Grande Basin_2003.pdf (64.47 MB). 1999. “Tree-Ring Reconstruction Of Western Spruce Budworm Outbreaks In The Rio Grande National Forest, Colorado”. School Of Renewable Natural Resources. School Of Renewable Natural Resources. Tucson: University of Arizona.
Ryerson, Daniel Eric_Tree-Ring Reconstruction of Western Spruce Budworm Outbreaks in the Rio Grande National Forest, Colorado_1999.pdf (5.59 MB). 1997. “New Perspectives On Settlement Patterns: Sedentism And Mobility In A Social Landscape”. Anthropology. Anthropology. Arizona State University. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=739774541&sid=19&Fmt=2&clientId=43922&RQT=309&VName=PQD.
. 1975. Tree-Ring Dates From Colorado W Durango Area. Tucson: University of Arizona.
Dean, Jeffrey_Tree-Ring Dates from Colorado W Durango Area_1975.pdf (71.77 MB). 1974. Tree-Ring Dates From Colorado V Mesa Verde Area. Tucson: University of Arizona.
Robinson, William, Harrill, Bruce_Tree-Ring Dates from Colorado V Mesa Verde Area_1974.pdf (114.94 MB). 1907. “Boating Down The Colorado”. University Of Arizona Monthly 8 (No. 1). University Of Arizona Monthly.
Douglass, AE_Boating Down the Colorado_1907.pdf (5.37 MB)