Diagrams of Materials Penetrated in Wells

Diagram of soil compositions at three gas wells in north Texas -- labeled Southern Methodist University, Magnolia Refining Co. (Corsicana, Tex.), and Focke well No. 2 -- with illustrated textures noting the layers of soil and stone types.
Date: 1916
Creator: unknown
System: The Portal to Texas History

[Texas] Typical Curves of Precipitation

Series of three graphs demarcating the average rainfall per month for specific Texas cities across different regions of the state. Some lines are marked in red to distinguish individual points.
Date: 1891
Creator: unknown
System: The Portal to Texas History