Photograph as originally submitted to
this page in the Historical Marker Database
www.HMdb.org.
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Photographer: Bill Pfingsten
Taken: May 17, 2014
Caption:
Principio Furnace Office | Submitted: May 17, 2014, by Bill Pfingsten of Bel Air, Maryland.
Database Locator Identification Number: p273572
File Size: 3.225 Megabytes
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