Reed's Rock, near Sherman. Albany County, Wyoming. 1869.

Album caption: Jackson, W. H. 5 - Reed's Rock, near Sherman, forms an excellent illustration of the style of weathering of the granites, characteristic of this region. These massive piles, like the ruins of old castles, are scattered all over the summits of the Black Hills, and the difference in the texture of the rock is such as to give a most pleasing variety of outline. They were once angular, cube-like masses, and have been worn to their present forms by the process of disintegration by exfoliation. Albany County, Wyoming. 1869. No index card. Same caption on page 5 of the Descriptive Catalog of the Photographs of the United States Geological Survey of the Territories, W. H. Jackson, Photographer, Second Edition, Illustrated.