Dear constant reader (as Stephen King would say) Charlie the Choo-Choo is from the Dark Tower series. The Dark Tower, of course, is Stephen King's great opus and the Charlie the Choo-Choo book plays an important role in the trials of Jake. You can find Charlie the Choo-Choo on page 142 of the third book in the Dark Tower series (The Waste Lands, do you ken?). It is an easy read and quite short in length. And it is suitable as reading material for younger children at bed-time. It is well presented and is printed on quality stock. The illustrations are also good. One for the Stephen King fans.