Resource Type

2007 Economic Census Map: Dallas-Fort Worth, Texas Combined Statistical Area

Map showing the area of the Dallas-Fort Worth, Texas Combined Statistical Area for which the U.S. Census Bureau collected data during the 2007 economic census.
Date: 2007
Creator: United States. Bureau of the Census.
Object Type: Map
System: The Portal to Texas History
Well-Drill Wrench (open access)

Well-Drill Wrench

Patent for a wrench for drill pipes used in drilling wells. Illustrations included.
Date: February 18, 1913
Creator: Osborne, William Rush & Lebus, George Franklin
Object Type: Patent
System: The Portal to Texas History