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in the Historical Marker Database www.HMdb.org
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Photographer: Devry Becker Jones (CC0)
Taken: October 11, 2021
Caption: 509 Electrical Light Display Block Signal
Submitted: October 11, 2021, by Devry Becker Jones of Washington, District of Columbia.
Database Locator Identification Number: p615148
File Size: 7.571 Megabytes
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