Prepared for 10th annual report of Prof. E.T. Cox, State Geologist by John Collett, 1878. Relief shown by hachures. Shows cities and towns, railroads, caverns, springs, lime kilns, quarries, mills, and coal. Includes indexed map of Wyandotte Cave with table of distances. "Table of distances in Wyandotte cave. Measured and estimated by Wash. Rothrock, a guide of 28 years' experience." Detached from: Eighth, ninth, and tenth annual reports of the Geological Survey of Indiana, made in the years 1876-77-78. Indianapolis : Indianapolis Journal Company, State printers, 1879. Imprint: [Indianapolis] : [Geological Survey of Indiana], [1879]; Imprint: [Indianapolis] : [Indianapolis Journal Company, State printers], [1879] Dimensions: on sheet 39 x 44 cm
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