(en) Tom Lewis, Divided Highways : Building the Interstate Highways, Transforming American Life, Ithaca, Cornell University Press, (ISBN9780801478222, OCLC875030598, lire en ligne), 5
books.google.com
(en) Stephen B. Goddard, Getting There : The Epic Struggle Between Road and Rail in the American Century, Chicago, University of Chicago Press, (ISBN0-226-30043-9, OCLC34745950, lire en ligne)
worldcat.org
(en) Stephen B. Goddard, Getting There : The Epic Struggle Between Road and Rail in the American Century, Chicago, University of Chicago Press, (ISBN0-226-30043-9, OCLC34745950, lire en ligne)
(en) Tom Lewis, Divided Highways : Building the Interstate Highways, Transforming American Life, Ithaca, Cornell University Press, (ISBN9780801478222, OCLC875030598, lire en ligne), 5