By Prof. E. T. Cox, Prof Leo Lesquereux. Title derived from caption titles. Includes 3 sections showing coal measures. No. 3. Connected section of coal measures in Indiana , No. 2. General section of coal measures in Southern Illinois and Western Kentucky / by Prof. E. T. Cox -- No. 1. Connected section of coal measures in Indiana / Prof Leo Lesquereux. Detached from: Second report of the Geological Survey of Indiana, made during the year 1870 ... / E. T. Cox. Indianapolis: R.J. Bright, 1871. Page 168.
Imprint: [Indianapolis] : [Geological Survey of Indiana], [1871]
Dimensions: 21 x 23 cm; Scale: Scale not given.