Geological map of Dallas County.

Map shows early twentieth century Dallas County, Texas soil composition, town and city boundaries, schools, railroads, roads, lakes, bridges, rock quarries, and gravel and sand pits. Includes acreage and depth of quarries and pits. No scale indicated.
Date: 1918
Creator: Shuler, Ellis W. (Ellis William), b. 1881
System: The Portal to Texas History

Artesian wells in Dallas County.

Shows two well log charts comparing bedrock compositions and a depiction of groundwater at successive depths in feet. No scale.
Date: 1918
Creator: University of Texas. Bureau of Economic Geology and Technology.
System: The Portal to Texas History