"Women's Suffrage Movement". Colorado Encyclopedia. Adapted from Carl Abbott, Stephen J. Leonard, and Thomas J. Noel in Colorado: A History of the Centennial State (2013) University Press of Colorado. 6 May 2016.{{cite web}}: CS1 maint: others (link)
Duncan, Elizabeth (15 January 2020). "John L. Routt". Colorado Encyclopedia. Retrieved 15 February 2021.
Duncan, Elizabeth (9 April 2020). "Caroline Nichols Churchill". Colorado Encyclopedia. Retrieved 11 February 2021.