This map is one of a set of thirty-six (36) maps prepared under Article V of the Treaty between Great Britain and the United States of America, signed at Washington, April 11, 1908, marking the Boundary Line between Canada and the United States as reestablished by the Commissioners designated, in accordance with the provisions of the said Treaty. This map, sheet 27, covers the boundary area between Rose Lake and Mountain Lake in Cook County, Minnesota and Thunder Bay District, Ontario.
These maps accompany the International Boundary Commission's report to survey and delineate the border between the United States and Canada. The Commission's efforts were concentrated on the traditional voyageurs highway, which now divides the Boundary Waters Canoe Wilderness Area and Quetico Provincial Park.
This is a map of the Boundary Waters region, and shows great detail on lake and river names. Area north of the international boundary is called "Hunter's Island." The roads and railroads are marked, as well as trails, ranger stations and telephone lines. Additions to the Superior National Forest Proclamation Boundary are shown using a reddish cross hatching.
Ernest Oberholtzer used this tourist information map for planning purposes, likely while serving in his role as head of the Quetico-Superior Council. He is educating about the impact of a proposed federal forest extension and noting sections necessary to be added to the national forest. Crayon-colored areas are shaded for designated forests: green = federal forest, blue = state forest, red = outline of proposed forest extension, and gray = necessary to be added to Superior National Forest under Quetico-Superior Council Program, now not included in federal proposal.