How prolific is Stephen King? Consider the book dedication. Most authors dedicate their books to their spouses. Perhaps, if one writes a second or third book, a dedication may be made to one's parents or children, or maybe another close friend or relative. As the books continue to appear, one may thank one's agent, editor, perhaps a favorite teacher or an admired authorial role model. Stephen King has published so many books that his latest, Doctor Sleep, a sequel to The Shining, is dedicated to the late rocker Warren Zevon, with whom King would jam occasionally as a member of the Rock Bottom Remainders (a rock band composed of famous authors like Dave Barry and Amy Tan).
Personally, I think this is great. I figure another two or three novels (which he will probably finish by Christmas) and Stephen King will be dedicating a book to me!