Animated Stereoview Portrait of a US Army Soldier and His Family at Fort Garland, Colorado Territory (1874)

Animated stereoview portrait of a US Army soldier and his family at Fort Garland, Colorado Territory, 1874. By Timothy O'Sullivan.

Source: Library of Congress.

Portrait of a Geographic Survey Team in a Camp Near the Mount of the Holy Cross in Colorado Titled "Camp Study. Hayden, Stevenson, Holman, Jones, Gardner, Whitney and Holmes. The Party That Made the First Ascent of the Holy Cross Mountain" (1873)

Portrait of a geographic survey team in a camp near the Mount of the Holy Cross in Colorado titled "Camp study. Hayden, Stevenson, Holman, Jones, Gardner, Whitney and Holmes. The party that made the first ascent of the Holy Cross Mountain," 1873. By William Henry Jackson.

Source: National Archives and Records Administration.