Lot of 3 Ohio Geological Information Circulars No. 31, 35 and 46
Published by Ohio Division of Geological Survey
Subsurface Information Catalog 1962 by Warren L Calvert, 59 pages
Subsurface Information Catalog 1963-1967 by Frederick B. Safford, 58 pages
Subsurface Information Catalog 1968-1974 by Barbara J. Adams, 29 pages