1. Calcareous Foraminifera in the Brownwood shale near Bridgeport, Texas Author/Creator: Plummer, Helen Jeanne Publication/Creation: Austin : The University of Texas, 1930 Resource Type: Book Access & Availability: Loading
2. Chart showing lithology, mineralogy, and paleontology of the Pennsylvanian Hermosa Group at Hermosa Mountain, La Plata County, Colorado 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
3. Copper and uranium in Pennsylvanian and Permian sedimentary rocks, northern Sangre de Cristo Range, Colorado Author/Creator: Lindsey, David A. Publication/Creation: Washington : U.S. G.P.O., 1995 Resource Type: Book Access & Availability: Loading
4. Correlation of the West Canyon, Lake Point, and Bannock Peak limestones (Upper Mississippian to Middle Pennsylvanian), basal formations of the Oquirrh Group, northern Utah and southeastern Idaho Author/Creator: Davis, L. E. (Larry E.) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey, Map Distribution Resource Type: Book Access & Availability: Loading
5. A critical review of the upper Pennsylvanian floras of eastern United States with notes on the Mazon Creek flora of Illinois Author/Creator: Darrah, William C. 1909-1989. (William Culp) Publication/Creation: [n.p.] : [publisher not identified], [1969] Resource Type: Book Access & Availability: Loading