Geologic map showing thickness of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming

Geologic map showing thickness of the upper Cretaceous Pierre Shale in the south half of the Powder River Basin, northeastern Wyoming and adjacent areas

Geologic map showing thickness of sedimentary rocks from ground surface to the top of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming

Geologic map showing thickness of sedimentary rocks from the ground surface to the top of the upper Cretaceous Pierre Shale in the south half of the Powder River Basin, northeastern Wyoming and adjacent areas

Lithologic studies of fine-grained Upper Cretaceous sedimentary rocks of the Black Hills region.

Early Cretaceous (Albian) ammonites from the Chitina Valley and Talkeetna Mountains, Alaska.

Shorter contributions to general geology, 1938-1940

Generation of magmas of the Pioneer batholith a geologically constrained thermal model

Core descriptions and preliminary geochemical data for the Amoco Production Company, Rebecca K. Bounds #1 well, Greeley County, Kansas

Geologic framework of the ground-water system in Jurassic and Cretaceous rocks in the northern Great Plains, in parts of Montana, North Dakota, South Dakota, and Wyoming

Chronology of Late Cretaceous igneous and hydrothermal events at the Golden Sunlight gold-silver breccia pipe, southwestern Montana

Measured sections and correlations of mid-Cretaceous rocks near the Lombard thrust of the Helena salient in southwestern Montana