Relief shown by spot heights.
Structure contour interval 10 feet. Key bed: fire clay coal.
"Oil and gas development correct to December 1, 1926."
"Projection from various lower coals as shown in index."
"Base source: New surveys based in part on portions of U.S.G.S. Williamsburg and Cumberland Gap quadrangles."
Includes text, 2 columnar sections, 1 cross section, and 2 insets.
Covers Whitley County, Kentucky.