Civil War-era 12 pound James Shell - with greater range and accuracy than the old solid iron cannonball, plus the James Shell contained explosives
USS Philadelphia, the only surviving gunboat built and manned by American rebels during the Revolution. Sunk by the British on 11 October 1776 in Lake Champlain.
Discovered and salvaged in 1935, in good condition due to the cold water. In addition to the guns and hull, hundreds of other items were recovered from the vessel including shot, cooking utensils, tools, buttons, buckles and human bones.