When Jack Kerouac’s On the Roadwas first published in 1957 no one had ever seen anything quite like it. As it turns out, that stream of consciousness style that Kerouac made famous owes a huge debt to a letter written by his friend Neal Cassady. Among Kerouac scholars and fans it became known as the “Joan Anderson letter.” It was missing for 65 years, but it has been found and will be auctioned…