During the Revolutionary War, the colonists had four brass cannons (which they had stolen from the Loyalist led local artillery company). Two were captured by the British during the war, but the other two have survived to this day and are displayed at the Bunker Hill Memorial and the Minute Man National Historic Park. Since these are probably some of the oldest, most traditional cannons in the US, (and are conveniently located around Boston), they were my targets for improvement/amendment.