Evacuation Day, Boston, Mass., 1776

found: Work cat.: Arnold, H.P. The Washington medal : in commemoration of the evacuation of Boston 17 March 1776, 1976.

found: Wikipedia, Dec. 20, 2006(On March 17, 1776 the 11-month siege of Boston ended when the Continental Army, under General George Washington, placed captured cannon from Fort Ticonderoga onto Dorchester Heights in South Boston. To prevent what would have been an inevitable slaughter of his troops, Howe agreed to retreat to Nova Scotia via his ships without setting the city on fire as he left)

found: Ancient and Honorable Artillery Company of Massachusetts website, Dec. 20, 2006(The day [March 17] actually marks the anniversary of the re-occupation of Boston by American troops in 1776 (St. Patrick's Day parade))