6 x 4 in. stereoviews, mostly scenic expedition views, on trimmed cardstock mounts (overall good to very good condition, several with rich tonality, some with soiling; corner and edge wear to mounts, some with surface residue). Rectos feature "US Topographical and Geological Survey of the Colorado River of the West, By J.W. Powell and A.H. Thompson" imprint. Most versos with applied paper labels including the photographer's credit, image number, and title. Some labels also include the "Department of the Interior, US Geographical and Geological Survey of the Territories" imprint and 1875 date. Several versos also include applied paper label from publisher J.F. Jarvis, Washington, DC.

The collection is highlighted by No. 21.  Mouth of the Narrows. Credited to John K. Hillers, the view shows the Rio Virgen, with a large view camera on a tripod, with various plate boxes on the ground, on the opposite side of the river.

Additional images of note include: A lone Mexican (from Views on Green River). -- Lower-Pa-Ro-Gunt (from Views on Kanab Creek). -- Grand Canyon of the Colorado. -- A Canon (from Views on Winslow Creek). -- Ready to Start (from Views on Winslow Creek). -- Mary's Veil in Bullion Canon (from Views on the Sever River). -- Roaring Fall - near view (from Views on Corral Creek). -- Side Wall (from Views on Winslow Creek). -- Lake on the Back of an Ancient Moraine (from Views in Summit Valley). -- The Shadow (from Views on the Colorado River). -- Procession of Stone-Jacket Men (from Views on the Kai-Par-O-Wits Plateau). -- The Falls (from Views on Boulder Creek). -- A Mountain Stream (from Views on Boulder Creek). -- At the Water-Pocket (from Views on the Kai-Par-O-Wits Plateau). -- Firs (from Views on Winslow Creek). -- The Poised Rock (from Views on the Colorado River). -- Mountain Creek (Red Canon Series) (heavy soiling on verso). -- And 86 other stereoviews featuring landscapes and landmarks. 

Together, 104 stereoviews from the US Geological and Geographical Survey of the Territories headed by J.W. Powell.