Photograph as originally submitted to
this page in the Historical Marker Database
www.HMdb.org.
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Photographer: Larry Gertner
Taken: August 16, 2018
Caption:
Thomas Alva Edison’s Menlo Park Invention Factory Markers | Submitted: December 13, 2020, by Larry Gertner of New York, New York.
Database Locator Identification Number: p556697
File Size: 0.911 Megabytes
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