Shows good, fair, and light oil territory, undrilled territory, gas wells, dry holes or salt water wells, abandoned territory, and pumping stations. Detached from: The petroleum industry in Indiana in 1906 / W.S. Blatchley. In 31st Annual report of the Department of Geology and Natural Resources of Indiana, 1906. 'January 1, 1907.' Scale 1:126,720. 2 miles = 1 in. By W.S. Blatchley, state geologist.