Peter Drummey, chief historian of the Massachusetts Historical Society, joins WBUR to talk about Evacuation Day.

Saturday, May 24, 11 a.m. to 3 p.m., open house on the 250th anniversary of the Battle of Chelsea Creek. Saturday, June 12, 6 p.m. to 8 p.m., open house. Saturday, June 21, 11 a.m. to 2 p.m., ...

Evacuation Day is celebrated on March 17 and commemorates when, in 1776, George Washington and the Continental Army drove the British forces out of Boston, ending the 11-month siege that Britain ...