Natural Column, Washakie Bad Lands / T. H. O'Sullivan, phot.

Plate 38 from: Geological exploration of the fortieth parallel / U.S. Army Corps. of Engineers ; Clarence King, geologist in charge. [Washington, D.C., 187-?].

Published in: Framing the West: The Survey Photographs of Timothy H. O'Sullivan / Toby Jurovics, Carol M. Johnson, Glenn Willumson, and William F. Stapp. New Haven: Yale University Press, 2010, plate 66.