1975. Guy, Donald E. Description based on 52. Includes both texts and maps. Ohio Division of Geological Survey. Ohio. Division of Geological Survey.
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1975. Guy, Donald E. Description based on 52. Includes both texts and maps. Ohio Division of Geological Survey. Ohio. Division of Geological Survey.
1975. Guy, Donald E. Description based on 52. Ohio Division of Geological Survey. Includes both texts and maps. Ohio. Division of Geological Survey.
1975. Guy, Donald E. Includes both texts and maps. Description based on 52. Ohio Division of Geological Survey. Ohio. Division of Geological Survey.
155. The ice age in Ohio
1998. Hansen, Michael C. Includes text and ill. by Michael Hansen. "Publication date: 9/98." Revised edition 1997. Scale approximately 1:2,100,000. Text, insets and ill. on... Ohio. Division of Geological Survey.
1909. Bownocker, J. A. 1865-1928. Scale [1:506,880]. Eight miles to one in. Geologic formations shown by colors and symbols. "Based on preceding maps by Newberry and Orton." "A. Hoe... Geological Survey of Ohio.
157. Geologic map of Ohio
1920. Bownocker, J. A. 1865-1928. J.A. Bownocker, state geologist ; revisions of the geology of Ohio shown on this map are the work of J.A. Bownocker, W.G. Burroughs [etc.] ... W.D.... Geological survey of Ohio.
1800. Ohio. Board of Canal Fund Commissioners. Scale indeterminable. "Land grants made by Congress to aid in the construction of canals in the State of Ohio." made under the direction of the Ohi... Ohio Canal Commission.
1918. Peters, William E. (William Edwards), 1857-1952. Scale approximately 1:760,320. From: Ohio lands and their subdivision / by William E. Peters. 1918. drawn by William E. Peters. Sold by William E. Peters?.
1910. Perkins, C. E. (Charles Elliott), 1840-1907. Scale approximately 1:276,000. Shows Ohio Canal from Dresden to Cleveland. "Scale distorted." Oriented with north to right. Includes "Table of Dist... Board of Public Works.