Books by Indiana. State Geologist
Report of a Geological Reconnoissance of Indiana, Made During the Years 1859 and 1860, Under the Direction of the Late David Dale Owen, M.D., State Geologist
Report, Volume 29
Geological survey of the state
Geological survey of the state of Indiana
Second report of a geological
Second report of a geological survey of the state of Indiana, made in the year 1838