(en) Route 9A Reconstruction Project, Battery Place to 59th St., New York County : Environmental Impact Statement, (lire en ligne)
issn.org
portal.issn.org
(en-US) « MEMORIES OF OLD ROUTE 9; New Highway From Croton to Peekskill, Replaces Towns And Traffic Liglits With Sweeping Views of the River », The New York Times, (ISSN0362-4331, lire en ligne, consulté le )
(en-US) « MEMORIES OF OLD ROUTE 9; New Highway From Croton to Peekskill, Replaces Towns And Traffic Liglits With Sweeping Views of the River », The New York Times, (ISSN0362-4331, lire en ligne, consulté le )