Compiled from maps by U. S. Geological Survey ; Breuker & Kessler Co. Phila.
Coordinates approximate and based on Greewich meridian.
Relief shown by shading and spot heights.
Legend indicates areas of high- and low-grade coal and those "probably containing some coal."
Shows waterways, towns, military cables.
Plate I. from "Geology and mineral resources of Kenai Peninsula, Alaska," 1915.