These two maps were included in the Third Annual Report of the Geological Survey of Texas, published under the supervision of E.T. Dumble, State Geologist.

A. The Cretaceous Area North of the Colorado River Geological Map Showing Divisions and Distribution Over a Typical Area, by J.A. Taff and S. Leverett, circa 1891, printed color (24.1 x 15.9"). This map covers a region just to the north of Austin, spanning from Georgetown northeast to Yarrelton and northwest to Lampasas. Seven different geological types in the Cretaceous System are keyed to the map through color and pattern including Forth Worth and Austin limestone. The base USGS map features additional details including topography, drainage, railroads, and place names. Condition: Issued folding on a clean sheet with a few fold separations along a fold at upper left that have been closed on verso with archival tape. (B+)

B. Geological Map of the Staked Plains and Adjacent Area, by W.F. Cummins, dated 1891, black & white (18.9 x 20.6"). This map covers much of the Texas panhandle, extending west into eastern New Mexico including Roswell and Eddy. A legend identifies six different geological types along with roads and irrigation canals. A few railroads are identified in this sparsely developed region including the Texas & Pacific and Fort Worth & Denver City lines. Condition: Issued folding on a lightly toned sheet with numerous fold separations that have been closed on verso with archival tape. One long fold separation has resulted in minor loss along a vertical fold at center. (B)

References:

Condition:

See description above.