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.
Drawbridge Mechanism
Photographer: Allen C. Browne
Taken: December 7, 2013
Caption: Drawbridge Mechanism
Additional Description:
Close-up of diagram on marker

Submitted: November 30, 2014, by Allen C. Browne of Silver Spring, Maryland.
Database Locator Identification Number: p293756
File Size: 1.649 Megabytes

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