Relief shown by spot heights.
Structure contour interval 10 feet. Key bed: Kellioka (fireclay) coal.
"Oil and gas development correct to December 1, 1927."
"Base source: U.S.G.S Harlan, Nolansburg, Cornettsville, Whitesburg, Sneedville, Hagan, Big Stone Gap, and Cumberland Gap quadrangles."
Includes note, 2 stratigraphic columnar sections, 2 structural cross sections, "Key to coals of Harlan County," and index to coal mines.
Covers Harlan County, Kentucky.