Hitch's collaboration with his screenwriter for North by Northwest was much less fraught than the experience he'd just had making Vertigo. For the earlier film, he'd had to use multiple writers over the course of developing the script, but for NXNW, Ernest Lehman remained his main man from beginning to end. The screenplay earned him an Oscar nomination and an Edgar Allan Poe Award in 1960.

A native New Yorker, Lehman was already an accomplished screenwriter when he worked with Hitchcock on NXNW. He'd written screenplays for smash-hit films including Sabrina (1954) and The King and I (1956). After North by Northwest, he'd go on to work with Hitch on one other picture, Family Plot (1976). But he'd also adapted a whole bunch of other stories for the silver screen, from Who's Afraid of Virginia Woolf (1966) to West Side Story (1961) and The Sound of Music (1965). Lehman won more screenwriting awards from the Writer's Guild than anyone in the Guild's history. (Source)

Not too shabby.