Well Cleaning Machine. (open access)

Well Cleaning Machine.

Patent for a new well cleaning machine.
Date: April 24, 1900
Creator: Cowan, Elias H.
System: The Portal to Texas History
Artificial Stone (open access)

Artificial Stone

Patent for artificial stone.
Date: April 28, 1903
Creator: Gaines, Thomas Kemp
System: The Portal to Texas History