Map of the Woodbine Artesian Reservoirs of the Black and Grand Prairies of Texas including the Eastern and Western Cross Timbers

This map shows a portion of Texas with markings for different kinds of artesian reservoirs. The header at the top of the map says, "U. S. Geological Survey, Twenty-First Annual Report, Part VII, PL. LXXI." Scale [1:804,672] "Contour Interval 100 feet.