Geology and coal resources of the Gulnare, Cuchara Pass, and Stonewall area, Huerfano and Las Animas counties, Colorado [map] / by Gordon H. Wood, Ross B. Johnson, and George H. Dixon
Includes stratigraphic columns, index maps, and text. Relief shown by contours and spot heights. Accompanied by text with bibliography, tables and coal sections on sheet 80 x 118 cm.