The above picture is a letter written by King discussing some of his favorite and most inspiring books. The ones that taught him how to write.
He delineates his influences in terms of the disciplines they helped him master. When it comes to plot, for example, Agatha Christie's The Murder of Roger Ackroyd was seminal, as was Ken Kesey's One Flew Over the Cuckoo's Nest for character. And William Faulkner's Light in August taught him how to firmly establish setting, a world for those characters and that plot to unspool in.