States System ofHighways Adopted for Uniform Marking by the American Association of State Highway Officials (地图). 1:7,000,000. Cartography by U.S. Geological
73英里。 Delaware Highways – US 9(页面存档备份,存于互联网档案馆) NJDOT – US 9(页面存档备份,存于互联网档案馆) Straight Line Diagram for the New Jersey portion of US9 from the New Jersey
57)是一条南北方向的美国国道。该公路连接了墨西哥科阿韦拉州和德克萨斯州弗里奥县,全长98.1英里。 Endpoints of US highways Texas Department of Transportation: Texas Highway Designation Files(页面存档备份,存于互联网档案馆)