Origin Notes and History:
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Roche Déboulé Mountains adopted 7 January 1913 on Ottawa file OBF 0024. Form of name changed to Rocher Déboulé Range 14 February 1918, and so-identified in "Mountains of Western Canada" published by the Geographic Board of Canada, 2 April 1918.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
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