Courtesy of New York Public Library Digital Collections General Henry Knox (1750-1806) played a key role in the revolutionary War, and helped to end the British siege of Boston . The 25 year old Bostonian hatched a plan to capture the cannons at Fort Ticonderoga in New York and wheel them 300 miles to Boston . His plan was to position the cannons atop Dorchester Heights in South Boston and aim them at the British fleet in Boston Harbor . General George Washington gave him the go-ahead, despite objections from his senior command, and Knox set off with a group of men and captured 59 canons in December, and dragged them across the frozen landscape of western Massachusetts , finally arriving in Cambridge on January 24, 1776. On March 5, British General Howe saw the guns aiming down at his fleet, and by March 17, 1776, the British troops, along with their sympathizers, evacuated Boston . George Washington later named Knox the first U.S...