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Original file ‎(5,472 × 3,648 pixels, file size: 7.05 MB, MIME type: image/jpeg) Photograph of Ashburnham monument and town hall

A 41-inch, iron, 11-inch US Navy Dahlgren cannon. Markings on the breech of the cannon identify it as "C.A. & Co.", "No. 215" with a weight of 15,750 lbs. A plaque in the cement sidewalk below the back of the cannon describes it as a "Civil War…