(W 109°00ʹ00ʺ--W 108°45ʹ00ʺ/N 43°22ʹ30ʺ--N 43°07ʹ30ʺ).
"Prepared as a part of the Interior Program for the Development of the Missouri River Basin, with the cooperation of the Geological Survey of Wyoming and the Department of Geology, University of Wyoming."--Margin.
Includes text, 2 stratigraphic columns, 5 cross sections, and 2 index maps.