Black and white stereograph of a scene with numerous miners and their pack animals, possibly in the San Juan Mountains of Colorado in the 1870s
Black and white stereograph of the Nightingale Mine at Cripple Creek, Colorado, probably in the 1900...
Photograph shows an engraving of men in a camp while packing mules for a government surveying party ...
Photograph of burros along the San Juan River in 1910. Photo no. 307 from Herbert E. Gregory Book 4...
Photograph of a pack train to Wilson Peak, Sierra Madre Trail, ca.1900. A line of more than a dozen ...
Black and white stereograph of an unidentified mining camp, possibly in Colorado, late 19th century
Photograph of 3 fully-loaded pack burros used in mining, California, ca.1900. A man mounted on anoth...
Photograph of a burro train of water carriers, Bisbee, Arizona, ca.1900-1930. About a dozen burros a...
Stereographic pair of photographs showing a scene in the mountains near the Big Thompson River in Co...
Stereographic pair of photographs showing a scene in Hayden Valley near the Big Thompson River in Co...
Photograph of a burro being packed for a desert ride at Bass Mystic Springs, Grand Canyon, 1900. Bas...
This is image is part of a report on the proposed Payette Forest Reserve by R.E. Benedict, 1904
Black and white stereograph of a scene in the canyon of the Animas River, Colorado. Note the Rio Gra...
Photographic portrait of a prospector with his burros during the days of the gold rush, ca.1900. The...
Burros hauling mine timbers into Roosevelt, Idaho and the mines at Thunder Mountain
Black and white stereograph of a scene with a railroad in the Sierra Blanca Mountains of Colorado, s...
Black and white stereograph of the Nightingale Mine at Cripple Creek, Colorado, probably in the 1900...
Photograph shows an engraving of men in a camp while packing mules for a government surveying party ...
Photograph of burros along the San Juan River in 1910. Photo no. 307 from Herbert E. Gregory Book 4...
Photograph of a pack train to Wilson Peak, Sierra Madre Trail, ca.1900. A line of more than a dozen ...
Black and white stereograph of an unidentified mining camp, possibly in Colorado, late 19th century
Photograph of 3 fully-loaded pack burros used in mining, California, ca.1900. A man mounted on anoth...
Photograph of a burro train of water carriers, Bisbee, Arizona, ca.1900-1930. About a dozen burros a...
Stereographic pair of photographs showing a scene in the mountains near the Big Thompson River in Co...
Stereographic pair of photographs showing a scene in Hayden Valley near the Big Thompson River in Co...
Photograph of a burro being packed for a desert ride at Bass Mystic Springs, Grand Canyon, 1900. Bas...
This is image is part of a report on the proposed Payette Forest Reserve by R.E. Benedict, 1904
Black and white stereograph of a scene in the canyon of the Animas River, Colorado. Note the Rio Gra...
Photographic portrait of a prospector with his burros during the days of the gold rush, ca.1900. The...
Burros hauling mine timbers into Roosevelt, Idaho and the mines at Thunder Mountain
Black and white stereograph of a scene with a railroad in the Sierra Blanca Mountains of Colorado, s...
Black and white stereograph of the Nightingale Mine at Cripple Creek, Colorado, probably in the 1900...
Photograph shows an engraving of men in a camp while packing mules for a government surveying party ...
Photograph of burros along the San Juan River in 1910. Photo no. 307 from Herbert E. Gregory Book 4...