Map of the boundary lines between the United States and the adjacent British provinces : from the mouth of the River St. Croix to the intersection of the parallel of 45 degrees of north latitude with the River St. Lawrence near St. Regis.
MLA
of Topographical Engineers, United States. Army. Corps. Map of the Boundary Lines between the United States and the Adjacent British Provinces : from the Mouth of the River St. Croix to the Intersection of the Parallel of 45 Degrees of North Latitude with the River St. Lawrence near St. Regis. Corps of Topl. Engineers, 1843. https://collections.library.yale.edu/catalog/15823923.
APA, 6th edition
of Topographical Engineers, U. S. A. C. (1843). Map of the boundary lines between the United States and the adjacent British provinces : from the mouth of the River St. Croix to the intersection of the parallel of 45 degrees of north latitude with the River St. Lawrence near St. Regis. [Maps]. Corps of Topl. Engineers, https://collections.library.yale.edu/catalog/15823923.