Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.
Helium Time Columns informational sign
Photographer: Jeff Leichsenring
Taken: July 30, 2023
Caption: Helium Time Columns informational sign
Submitted: August 1, 2023, by Jeff Leichsenring of Garland, Texas.
Database Locator Identification Number: p740694
File Size: 6.703 Megabytes

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