Blue line print. 'Base prepared from Bloomington, Clear Creek, Stanford and Whitehall topographic quadrangles, U.S.G.S, by the Indiana Geological Survey, 1964.' 'Cavern maps by members of several organizations, B.I.G., C.I.G., W.C.G., R.P.I., & I.U.S.C.' Scale 1:6,000. Compiled by R.L. Powell.