Stanford Geospatial CenterThis polygon shapefile is an index to the map series 'Joint maps of the international boundary between United States and Canada: from the source of the St. Croix River to the Atlantic Ocean.' The maps were originally created by the International Boundary Commission in 1924. This layer provides an index map that can be used to locate individual scanned map sheets.Shapefilehttps://purl.stanford.edu/ky348zn9805engStanford Digital RepositoryPublicGrids (Cartography)Index mapsBoundariesJoint maps of the international boundary between United States and Canada: from the source of the St. Croix River to the Atlantic Ocean,Maps IndexDatasetsCanadaNorthern boundary of the United StatesUnited States1924Stanford