Balloons - Helium Plants - Development of helium work carried on under direction of the Bureau of Mines. Interchangers. Plant No. 3, located three miles north of Petrolia, Texas
Summary
Balloons - Helium Plants
Public domain photograph related to the United States in World War One, free to use, no copyright restrictions image - Picryl description
Tags
Date
1917 - 1918
Source
The U.S. National Archives
Copyright info
No known copyright restrictions