Pennsylvania civilians digging of earthworks on Hummel Heights ID: 76 | This file appears in: Fort Couch, Fort Washington, and the Defense of Harrisburg Illustration of the fortification process at Hummel Heights. | Source: ExplorePAHistory.com | Rights: Rick Sauers Download Original File SourceExplorePAHistory.comRightsRick Sauers "Pennsylvania civilians digging of earthworks on Hummel Heights" appears in: Fort Couch, Fort Washington, and the Defense of Harrisburg
