| − | * [http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&Params=A1ARTA0001270 ''Canadian Encyclopedia'' (2008) article]] | + | * [http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&Params=A1ARTA0001270 ''Canadian Encyclopedia'' (2008) article] |