"Base modified from U.S. Geological Survey base map of Indiana, 1950". "Compiled from Indiana Geological Survey Petroleum Exploration Maps of Indiana counties". Includes "Names and locations of oil and gas fields", "Underground storage sites for liquified petroleum gas".
Imprint: 1) [Indianapolis, Indiana] : [State of Indiana, Department of Natural Resources], 1976 2) Bloomington, Indiana : Publications Section, Indiana Geological Survey, 1976 3) Washington, D.C.: Williams & Heintz Map Corporation, 1976.
Scale: 1:500,000; Dimensions: 92 x 76 cm
Coordinates: W0880000 W0850000 N0414500 N0380000