The map shows three contemplated boundaries and the treaty boundary in great detail. Covers area "From a point where the 49th parallel of north latitude strikes the Western Coast of the Continent to the middle of the channel which separates the Continent from Vancouver's Island and thence southerly through the middle of said channel &c. to Fuca's Straits, in accordance Treaty of January 15 1846." This is map #283 (San Juan Boundary Dispute) in Derek Hayes Historical Atlas of the Pacific Northwest. It is the map used by the Americans in the disputes and shows the three boundaries in contention. In arbitration Kaiser Wilhelm awarded in 1872 to the U.S. the boundary it claimed the western most of the 3 lines. A very detailed and early depiction of the San Juan Islands.

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Condition: B

Backed with Japanese tissue, toned at folds.