Murray, Haydn H. (Haydn Herbert),1924-cartographer."Base from Map of Indiana, 1950 edition, published by U.S. Geological Survey. Minor revisions and additions made from Indiana Department of Conservation, Geological Survey, county base maps."Imprint: [Bloomington, Ind.?] : Indiana Department of Conservation, Geological Survey, 1952.Dimensions: 45 x 31 cm; Scale: 1:1,000,000Coordinates: W0880000 W0844500 N0414500 N0375200JPEGVAC3073-M-00981G4091.H5 1952 .M8engIndiana. Geological SurveyPublicShale gas industryShaleCeramic industriesClayClay industriesMap showing location of clay and shale pits and ceramic plants in IndianaMapsIndianaIndiana1952Indiana University