deployments, plus much more) Area code maps (页面存档备份,存于互联网档案馆) from WhitePages.com LincMad Telephone AreaCodesand Splits (页面存档备份,存于互联网档案馆) by Linc Madison
American FactFinder. 美国人口调查局. [2008-01-31]. (原始内容存档于2013-09-11). Official website(页面存档备份,存于互联网档案馆) Tampico Area Historical Society & Museum(页面存档备份,存于互联网档案馆)
Hamilton , NY) 777: Toronto, ON 778: Allegheny Observatory, Pittsburgh, PA 779: David Dunlap Observatory, Richmond Hill, ON 780: Leander McCormick Observatory