Description: This map shows a portion of Texas with markings for different kinds of artesian wells. In the top, left-hand corner, there is an inset showing the entire state and marking the area detailed in the map. The header at the top of the map says, "U. S. Geological Survey, Twenty-First Annual Report, Part VII, PL. LXVIII." Scale [1:316,800] "Contour Interval 100 feet."
Creator: Hill, Robert Thomas, 1858-1941