Somewhere I have seen a list,from the National Park Service I believe, of cannon on battlefields. This list showed the manufacturer of the cannon, the battlefield, and the cannons location on that battlefield. I am interested in locating Tredegar guns on different battlefields, but have visited several battlefields and the park service says they do not know where certain cannons are located on the field. If anyone has this list or anything to note where certain cannon are on certain battlefields I would greatly apprecitate it, as my wife gets tired of me checking every cannon on every field looking for just Tredegar guns. thanks in advance, tom