On November 19 at 6:00 p.m. the Jamaica Plain Historical Society will show the movie, “Conservation of Matter: The Fall and Rise of Boston’s Elevated Subway“, at the Connolly Branch Library in Jamaica Plain. This is a repeat showing of the film which was shown at the Loring-Greenough House previously. This documentary follows the journey of 100,000 tons of steel from the Boston Elevated Subway, which was erected in 1898, demolished in 1987, and then shipped eight thousand miles away to Japan to be melted and made into steel beams. These beams then cross the ocean again, where they are fabricated into a remarkable new structure in a surprising location. For complete information visit www.jphs.org.