Relief shown by contours and spot heights.
Envelope title: Geology of the Middlesboro north quadrangle, Kentucky.
"Geology mapped by K.J. Englund, J.B. Roen, and A.O. DeLaney, 1960-61; geology revised in part by Charles L. Rice and Russell G. Ping, 1977-85."
"Geologic quadrangle maps of the United States"--Envelope.