1. West-east stratigraphic transect of Cretaceous rocks in the northern Rocky Mountains and Great Plains regions, southwestern Montana to southwestern Minnesota Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey Information Services Resource Type: Map Access & Availability: Loading
2. The Winters of the world : earth under the ice ages Publication/Creation: New York : Wiley, 1979 Resource Type: Book Access & Availability: Loading
3. Water in carbonate rocks of the Madison Group in southeastern Montana : a preliminary evaluation Author/Creator: Miller, W. Roger (William Roger) Publication/Creation: Washington : U.S. Govt. Print. Off, 1976 Resource Type: Book Access & Availability: Loading