View of man on a raft on Loch (lake) Ivanhoe, near sunrise or sunset, Pitkin County, Colorado.
Ivanhoe Lake (Colo.)--1880-1890.; Pitkin County (Colo.)--1880-1890.; Lakes & ponds--Colorado--Pitkin County--1880-1890.; Sunrises & sunsets--Colorado--Pitkin County--1880-1890.
View of snow-covered Poughkeepsie Gulch above timberline, with men on horses in center of gulch, San Juan Mountains, San Juan County, Colorado.
Poughkeepsie Gulch--1880-1900.; San Juan County (Colo.)--1880-1900.; San Juan Mountains (Colo. and N.M.)--1880-1900.; Canyons--Colorado--San Juan County--1880-1900.
View of a rock formation identified as Sphynx Rock, a man on horseback, and Colorado Midland Railroad tracks near Wild Horse in Chaffee County, Colorado.
Colorado Midland Railroad Company--1880-1890.; Chaffee County (Colo.)--1880-1890.; Horseback riding--Colorado--Chaffee County--1880-1890.; Railroad tracks--Colorado--Chaffee County--1880-1890.; Rock formations--Colorado--Chaffee County--1880-1890.
View of a placer mining operation at Keystone Placer Mine, San Miguel County, Colorado; shows a monitor nozzle and a water pipe.
Keystone Mine (San Miguel County, Colo.)--1880-1900.; San Miguel County (Colo.)--1880-1900.; Hydraulic mining--Colorado--San Miguel County--1880-1900.; Mining--Colorado--San Miguel County--1880-1900.; Penstocks--Colorado--San Miguel...
View of Manitou and Pike's Peak Railway locomotive and passenger car with group of men and women and man atop locomotive with hose, Pikes Peak, El Paso County, Colorado.
Manitou and Pike's Peak Railway Company--1880-1890.; El Paso County (Colo.)--1880-1890.; Mountain railroads--Colorado--El Paso County--1880-1890.; Passengers--Colorado--El Paso County--1880-1890.
View of large frame and rusticated stone buildings, frame house, and locomotive, passenger car and tracks of the Manitou and Pike's Peak Railway, Manitou Springs, El Paso County, Colorado.
View of adult and baby burros at Manitou and Pike's Peak Railway tracks, El Paso County, Colorado. Adult burro has pack of tools with words written "helped build Pike's Peak Ry".
Manitou and Pike's Peak Railway Company--1880-1890.; El Paso County (Colo.)--1880-1890.; Donkeys--Colorado--El Paso County--1880-1890.; Mountain railroads--Colorado--El Paso County--1880-1890.; Pack animals--Colorado--El Paso County--1880-1890.;...
View of adult and baby burros at Manitou and Pike's Peak Railway tracks, El Paso County, Colorado. Adult burro has pack of tools with words written "helped build Pike's Peak Ry".
Manitou and Pike's Peak Railway Company--1880-1890.; El Paso County (Colo.)--1880-1890.; Donkeys--Colorado--El Paso County--1880-1890.; Mountain railroads--Colorado--El Paso County--1880-1890.; Pack animals--Colorado--El Paso County--1880-1890.;...
View of adult and baby burros at Manitou and Pike's Peak Railway tracks, El Paso County, Colorado. Adult burro has pack of tools with words written "helped build Pike's Peak Ry".
Manitou and Pike's Peak Railway Company--1880-1890.; El Paso County (Colo.)--1880-1890.; Donkeys--Colorado--El Paso County--1880-1890.; Mountain railroads--Colorado--El Paso County--1880-1890.; Pack animals--Colorado--El Paso County--1880-1890.;...
View of Manitou and Pike's Peak Railway locomotive and passenger car with men and man on wooden platform, within field of boulders, Pikes Peak, El Paso County, Colorado.
Manitou and Pike's Peak Railway Company--1880-1890.; El Paso County (Colo.)--1880-1890.; Pikes Peak (Colo.)--1880-1890.; Boulders--Colorado--El Paso County--1880-1890.; Mountain railroads--Colorado--El Paso County--1880-1890.
View of Denver and Rio Grande Railroad trestle with Toltec Tunnel in rock formation, Rio Arriba County, New Mexico.
Denver and Rio Grande Railroad Company--1880-1890.; Rio Arriba County (N.M.)--1880-1890.; Railroad tracks--New Mexico--Rio Arriba County--1880-1890.; Tunnels--New Mexico--Rio Arriba County--1880-1890.
View of line of men with tools working on Denver and Rio Grande railroad tracks with locomotive and cars, Saguache County, Colorado.
Denver and Rio Grande Railway Company--1880-1890.; Saguache County (Colo.)--1880-1890.; Railroad construction & maintenance--Colorado--Saguache County--1880-1890.; Railroad construction workers--Colorado--Saguache County--1880-1890.