Who is James Thurber from Letters of E. B. White and what is their importance?

E.B. White encountered James Thurber for the first time when they shared a small office at The New Yorker, and they quickly realized that both were dry wits who look slightly askance at the absurdities of the world. They collaborated on "Is Sex Necessary?", which pokes fun at the sex-obsessed world in which they find themselves. Thurber, almost completely blind, produced hilarious, elongated drawings to accompany his humorous writings. White on one occasion felt compelled to write to a major newspaper disavowing that he had anything to do with Thurber's seeming overnight success. Thurber, he asserted, was his own man with his own gift who had made his own success.