On 10 June 1925, the date the United Church of Canada was founded, two-thirds of the congregations of the Presbyterian Church of Canada - including every Presbyterian congregation in Halifax - vanished. Even before the United Church came into existence, however, non-uniting Presbyterians were forming a new congregation. "The Blue Banner" is a case study of the survival of historic denominationalism grounded in resistance to church union. It traces the origins and near demise of Presbyterianism in Nova Scotia and the development of Saint David's from its beginnings as a new congregation and...