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.
Extreme Testing Marker
Photographer: Joel Seewald
Taken: August 3, 2019
Caption: Extreme Testing Marker
Additional Description: View looking to the west along North Proving Grounds Boulevard. This marker is at the end of the road, just to the left.
Submitted: August 8, 2019, by Joel Seewald of Madison Heights, Michigan.
Database Locator Identification Number: p487225
File Size: 2.720 Megabytes

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