Map of Alaska Oil Exploration
A United States Geological Survey map titled "Figure 1: Geologic Map of the Arctic Slope of Alaska." The map shows rivers, lakes, camps, monuments, service cabins, test wells, fault lines, boundaries, altitudes of prominent peaks, oil seeps, coal mines, and the geological composition of the area surrounding naval petroleum reserve sites. Handwriting on the front reads: "62." Handwriting on the back reads: "Chapman Papers: Alaska Oil Exploration."