Photograph as originally submitted to this page
in the Historical Marker Database www.HMdb.org
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Photographer: David Seibert
Taken: April 25, 2013
Caption: Progressive Experiment Marker
Submitted: November 7, 2017, by David Seibert of Sandy Springs, Georgia.
Database Locator Identification Number: p402901
File Size: 1.982 Megabytes
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