Charlie the Choo-Choo

This is a fan created easter egg for Stephen King's Dark Tower series. On the surface, it seems like a very short and innocent kids story, which is why I gave it only 3 stars - but I'm told those who've read book three the series will see it quite differently. A clever analogue of the King in Yellow, perhaps?

I never got around to finishing the series as it was still being written when I read the first book. Hopefully, I'll get around to it again soon and can update this with some more context.