Hertenstein, Earl,surveyor.. Hurst, Lewis A. (Lewis Alexander),1874-cartographer,surveyor.. Middleton, Philip (Soil surveyor),surveyor.. Tharp, W. E. (William Edgar),surveyor.. Watkins, W. I. (William Isaac),1888-1973,surveyor.. (1915). Soil map, Indiana, Grant County sheet. [JPEG]. Bureau of Soils. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00933