USA - Second Report of the Geological Survey of Indiana - Made During the Year 1870 by E.T. Cox State Geologist, published Indianapolis 1871 with presentation card from E.T. Cox to A.E. Agassiz to Harvard College. Contains two large folding maps to rear of Sullivan County, Indiana by G.H. Levette, showing deposits and mines etc. 25"x31" and of diagrams relating to mining and geology, 304pp cloth covers faded and damage to rear of spine, one plate, bound upside down, contents clean