Sources
Books:
Historic Avalanches in the Northern Front Range and the Central and Northern Mountains of Colorado, by M. Martinelli Jr. and Charles F. Leaf. 1999: Rocky Mountain Research Station.
History of Leadville and Lake County, Colorado, by Don and Jean Griswold.
Leadville: Colorado's Magic City, by Edward Blair. 1980: Pruett, Boulder.
History of the Arkansas Valley, Colorado 1881: O.L. Baskin & Co., Historical Publishers, Chicago.
Periodicals:
Leadville Carbonate Chronicle/P>
Central City Register Call
Denver Times
Denver Tribune-Republican
Denver Post
Field & Stream
Leadville Herald Democrat
Leadville Herald
Mining Reporter
Original sources:
Leadville city directories, 1879-1885, Lake County Library
Individuals:
Stan Dempsey, mining geologist; chairman and CEO of Royal Gold, Denver.
Phil Panum, librarian in the Western History Department, Denver Public Library
Bob Elder, Leadville resident.
Internet sources:
Colorado Avalanche Information Center:
http://www.caic.state.co.us/US_World_stats/stats.html