Orange Line, The Washington Post, November 18, 1978: D1 Halsey III, Ashley; Aratani, Lori; Duggan, Paul. All aboard! Metro’s new Silver Line rolls down the
Metro to Potomac Mills? Group recommends extending Blue Line, widening I-95 (PDF). Washington, D.C.: WJLA-TV. 2011-02-08 [2017-06-05]. (原始内容 (PDF)存档于2017-07-05)