Books

Mutel, Cornelia F., and John C. Emerick. From Grassland to Glacier. Boulder, CO: Johnson Books, 1984 and 1992.

Personal Interview

DeSchepper, Lynnette. Interviewed by Elsie Baum. Denver, Colorado. 20, November, 2003.

Dr. Fogleman. Interviewed by Elsie Baum. Denver, Colorado, 4 December 2003.

Steele, Susie. Interviewed by Patti McKinnel's class. Golden Gate Canyon State Park, Colorado. 26, September, 2002.


Web Sites

Aspen. Encyclopedia Britannica. Retrieved December 10, 2003, from Encyclopedia Britannica Online. http://www.search.eb.com/ eb/ article?eu=10018

Baranski, Michael J. " Aspen " World Book Online Reference Center, http://www.worldbookonline.com/ ar?/na/ar/ co/ar033700.htm, December 11, 2003