A Reconnaissance Report on the Geology of the Oil and Gas Fields of Wichita and Clay Counties, Texas (open access)

A Reconnaissance Report on the Geology of the Oil and Gas Fields of Wichita and Clay Counties, Texas

Report published in a scientific bulletin, describing the geology of the oil and gas fields that reside within Wichita and Clay counties in Texas. Index starts on page 292.
Date: September 8, 1912
Creator: Udden, Johan August, 1859-1932
Object Type: Book
System: The Portal to Texas History
Well-Drill Wrench. (open access)

Well-Drill Wrench.

Patent for a well drill wrench that is easily adjustable for different sized drill chucks. Its designs makes rotating the wrench smoother and less likely to slip off of drill chucks.
Date: November 8, 1921
Creator: Ellinger, William H.
Object Type: Patent
System: The Portal to Texas History
Sash Lock (open access)

Sash Lock

Patent for a sash lock. This invention pertains to railway cars. Illustration included.
Date: November 8, 1904
Creator: Hughes, Henry B.
Object Type: Patent
System: The Portal to Texas History