William Henry Jackson Gothic Mountain, East River, Gunnison County, Colorado. U.S Geological Survey. Photographic reproduction of original wet collodian process photograph. Courtesy of USGS Library. This image was taken as the expedition headed north, up Gothic valley. It was the Read More

William Henry Jackson Teocalli Peak. Panoramic view from near White Rock Mountain, National Range. White Rock Mountain in the Elk Mountains, Gunnison County, Colorado. U.S Geological Survey. Photographic reproduction of original wet collodian process photograph. Courtesy of USGS Library.   Read More

William Henry Jackson Teocalli Peak, from the Aztec teocalli, or sacrificial mound, that were always built in a pyramidal form, and which this mountain closely resembles. Gunnison County, Colorado. U.S Geological Survey. Photographic reproduction of original wet collodian process photograph. Read More

Stereoview photography was popular between 1860 and 1920. Stereoviews are commonly referred to as 3-D photos. The illusion of depth was created by a camera utilizing two lenses four and a half inches apart, mimicking the distance between human eyes. Read More

William Henry Holmes Crested Butte, Colorado 1873 sketch of the East River drainage Inverted Beds August 4 1873. from USGS 1874 Survey report.

William Henry Jackson Gothic, Colorado 1873 photograph of Gothic Mountain on the Hayden Survey Gothic Mountain East River, Gunnison County, Colorado. from USGS 1874 Survey report.

Hopson Shermans Gothic, Colorado 1873 wood engraving of Gothic Mountain after William Henry Jackson photograph from the Hayden Survey from USGS 1874 report. HACB Collection.

William Henry Jackson Crested Butte, Colorado 1873 photograph of the East River Valley from Schofield with Gothic Mountain and Crested Butte Mountain View down East River from the Pass, showing Gothic Mt and Crested Butte in the Distance.  From USGS Read More

William Henry Holmes Crested Butte, Colorado 1873 sketch of the East River Valley Panoramic of East River from Schofield. Sheet number 65-61.  From USGS

Bisbing Crested Butte, Colorado 1873 wood etching of Teocalli Mountain after William Henry Jackson photograph Teocalli Mountain, Central Colorado. From USGS report 1874

William Henry Jackson Crested Butte, Colorado 1873 photograph showing the view looking south from White Rock Mountain, with Teocalli Mountain on the left. Teocalli Peak, Panoramic View near White Rock Mountain. From USGS

William Henry Jackson Crested Butte, Colorado 1873 photograph showing White Rock Mountain ridgeline separating the Teocalli Creek drainage to the south from the East River drainage to the north White Rock Mountain in the Elk Mountains. From the USGS