The 15 in. gun at Fortress Monroe, Va. Weight 50,000 lbs, and carries a ball 475 lbs. weight from 4 to 5 miles

The 15 in. gun at Fortress Monroe, Va. Weight 50,000 lbs, and carries a ball 475 lbs. weight from 4 to 5 miles

15-inch (i.e. 13-inch) mortar, "Dictator" in the works in front of Petersburg, Va. View from the north, September 1, 1864

Eight inch Brooke rifled gun, weighing 21,987 lbs., in unfinished battery wood-hurdle revertment (i.e. revetment), anchored by grape vines