Adopted 12 December 1939 on 92 SE, as labelled on early Hydrographic Charts and on BC map 2B, 1914.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

Journal entry 14 June 1792: the sun shining at this time for a few minutes afforded an opportunity of ascertaining the latitude of the east point of an island which, from the shape of the mountain that composes it, obtained the name of Anvil Island.' (Vancouver, 8 ed, vol II, p.195) [description in 2004 Sailing Directions: Leading Peak, the summit of Anvil Island, is 754m high and very conspicuous from most parts of Howe Sound; it resembles the horn of an anvil pointed upwards.]

Source: Vancouver, Captain George; "A Voyage of Discovery to the North Pacific Ocean and Round the World"; London 1798-1801 (5 books)

The original Squamish name is Lhaxwm and it has long been an important place of spiritual training. Kwelháynexw ta hiyí élhkaý wa áynexw s7élken tl'a skwtsa7ts (during mythological times a serpent resided at the peak of the island). (December 2011 from: Cultural Journey Sea-to-Sky Corridor website, Squamish and Lil'wat First Nations)

Source: included with note