Extremely rare map of Oregon Territory, published January 1, 1846, the year the Britain and the United States finally resolved their differences over the western border between the US & Canada For the better part of 20 years, existed between the US and Great Britain over the proper placement of the boundary. The American's argued for a Fifty-Four Degrees, Forty Minutes border (54-40 or fight), while the British advocated 42 degrees (the California/Oregon Border). Johnston's map is perhaps the only separately issued map published for the sole purpose of illustrating the claims of the two countries. The map notes four prospective boundaries, the Boundary settled bythe Treaty of Florida in 1819 (California-Oregon Border), The boundary proposed by the US 1824-26 (49 degrees--approximately the current border), the Boundary proposed by Britain in 1826 (tracking the Columbia River) and the Treaty between Russiand the US in 1824 (North of Queen Charlotte's Island (54 degrees, 40 minutes). The notes in the map discuss the area, population, settlements and navigable waters in the region, along with the relevant treaties. The American Wagon Route, MacKenzie's Route and a French Canadian Settlement are among the annotations. The map is a legendary rarity. No copy has been offered in a dealer catalogue in the past 25 years. The first example we have seen. Toned and archically backed, with a bit of loss and some minor staining. Wheat 516. A seminal map for NW Collectors.