sentences:  The Brookchester Land Company made extensive alterations to the house in 1908.To save it from demolition, the Bergen County Historical Society, a non-profit volunteer organization, offered the County of Bergen a 50-year ground lease to move the Campbell-Christie House from New Milford onto its lands in River Edge in 1977 on condition that the Historical Society not only have occupancy of the structure in keeping with its mission, but also the exclusive right to determine its use and historic restoration; in exchange, the County of Bergen agreed to pay utilities and to maintain the house and its mechanical systems in sound condition.Bergen County Freeholder D. Bennett Mazur led efforts to save the Campbell-Christie House, after it had been slated for demolition.