"A Geological Map of Ohio",
Period: 1909 (dated)
Publication: Geological Survey of Ohio
Color: Printed Color
29.5 x 32.5 inches
74.9 x 82.6 cm
Large and colorful geological map of Ohio with a scale of eight miles to the inch. The legend shows 11 geologic units in different colors. The map also shows nice detail of railroads, canals, mines and the important oil and gas region in northwestern Ohio. Drawn by J.A. Bownocker, State Geologist and Professor of Geology at Ohio State University.
There are a few small splits at fold intersections and a few minor spots, else very good.