Atchison Topeka and Santa Fe Railroad Photograph File - Online collection of photographs of the Atchison Topeka and Santa Fe Railroad from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/SantaFe1.html#DSantaFe1
Colorado Springs and Cripple Creek Railroad Photograph File - Online collection of photographs of the Colorado Springs and Cripple Creek Railroad from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/CSCR1.html#CSCR1
Denver South Park and Pacific Railroad Photograph File - Online collection of photographs of the Denver South Park and Pacific Railroad from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/DenSPP1.html#DenSPP1
Florence and Cripple Creek Railroad Photograph File - Online collection of photographs of the Florence and Cripple Creek Railroad from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/FlorCC1.html#FlorCC1
Georgetown Loop Railroad - Gary Morgan's history of this scenic railroad. www.gtownloop.com/history.html
Manitou and Pikes Peak Cog Railway Photograph File - Online collection of photographs of the Manitou and Pikes Peak Cog Railway from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/ManPP1.html#ManPP1
Midland Railroad Photograph File - Online collection of photographs of the Midland Railroad from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/RR1.html#RR1
Rio Grande Southern Railroad Photograph File - Online collection of photographs of the Rio Grande Southern Railroad from the Old Colorado City Historical Society archives. history.oldcolo.com/history/research/riogrns1.html#riogrns1
The Narrow Gauge Circle - Based on an early day travel package offered by the Denver and Rio Grande Railroad. Includes photos, area information and model railroading links. www.narrowgauge.org
