Adopted in the 19th Report of the Geographic Board of Canada, 31 March 1927. Elevation of 6266 feet. Boundary Peak 27. Re-approved 20 January 1955 on 104B.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
After Henry Middleton (1771 - 1846), United States Minister to Russia, 1820-1830; negotiated the treaty of 1824 with Russia.