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.
Mechanical Hall Marker
Photographer: Devry Becker Jones
Taken: March 15, 2019
Caption: Mechanical Hall Marker
Submitted: March 16, 2019, by Devry Becker Jones of Washington, District of Columbia.
Database Locator Identification Number: p466933
File Size: 5.939 Megabytes


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