The Merrimack Historical Society will feature a presentation of unique places from Merrimack’s past as depicted on post cards. Collectors Rick Price, Steve Jarry and Ron Ketchie will share Merrimack post cards on Tuesday, May 21st  at 7 PM. Join us at the Historical Society’s headquarters in the 1847 schoolhouse at 520 Boston Post Road in South Merrimack.  This is a unique program that is FREE to the public.  There will be a short business meeting at 6:30, prior to the program.  Refreshments will be served and parking is available in the church parking lot across the street.  For more information contact Anita at 424-5084 or  anitacreager58@comcast.net.