Harry Isbrucker has been a member of the board of directors of the Stanstead Historical Society and has served as president, treasurer and chairman or member of many of the Society's most demanding committees, namely those relating to the care and upkeep of Carollcroft, an historical mansion built in 1859 that houses the Colby-Curtis Museum.
Mr. Isbrucker has served on local and regional committees to consider the fate of heritage buildings in the Eastern Townships. He was also closely involved in the development of the Massawippi recreational trail that follows a section of disused railway bed on the Canadian side of the Quebec-Vermont border. He was a leading player in the rehabilitation of the Pioneer and Veteran's Memorials at Dufferin Heights, giving unstintingly of his time and experience. He remains active in border region business circles, promoting the economic health of the area.