North by Northwest
http://www.imdb.com/title/tt0053125/?ref_=ttqt_qt_tt
The page for the film on the Internet Movie Database
My favourite Hitchcock: North by Northwest
https://www.theguardian.com/film/filmblog/2012/aug/03/favourite-hitchcock-north-by-northwest
A retrospective review of the film in The Guardian by David Shariatmadari
Hitchcock Takes Suspenseful Cook's Tour; 'North by Northwest' Opens at Music Hall
http://www.nytimes.com/movie/review?res=9404E7D91631EE3BBC4F53DFBE668382649EDE
A review of the film at the time of its release written by A.H. Weiler, and published in The New York Times
13 Monumental Facts About North by Northwest
http://mentalfloss.com/article/77788/13-monumental-facts-about-north-northwest
A list of fun facts about the film
The Man from Dream City
https://www.newyorker.com/magazine/1975/07/14/the-man-from-dream-city
New Yorker critic Pauline Kael's profile of Cary Grant