Musée canadien de la guerre
Upon retiring from the business world, Manson worked full-time from 1997 until 2005 as volunteer Chairman of the "Passing the Torch" campaign, which raised $16.5 million in support of the new Canadian War Museum. He was on the Board of Trustees of the Canadian Museum of Civilization Corporation from 2000 to 2006, and during that time, he chaired the Canadian War Museum Committee and the Canadian War Museum Building Committee for the new museum, which opened in 2005. He is past Chairman of the Aerospace Industries Association of Canada and Canada's Aviation Hall of Fame.