"Charles Denison, M.D. was a prominent Colorado physician and Professor of Chest Diseases and Climatology at the University of Denver from 1881-85. Dension came to Colorado in 1873 with tuberculosis and was so impressed with the therapeutic effect of the Colorado climate he developed a strong interest in the effect of climate on health and disease. He published several classic articles and books on this subject."
Health Sciences Library, University of Colorado Anschutz Medical Campus