Structure contour map of the surface rocks of the Model Anticline, Las Animas County, Colorado map / by N.W. Bass, assisted by Chas. E. Straub and H.O. Woodbury.
Includes text, index map, columnar section, and Fig. 1: Cross section made from driller's logs of wells on Model Anticline. Horizontal scale [ca. 1:7,900] "Contour drawn on limestone bed at base of Codell member of Carlile Shale. Contour interval, 25 feet. Altitudes in feet above sea level." Reference at end of text. Missing 12/30/04