My step son had at least a couple. I think these were two of them:
I want to say that maybe they were loose adaptions of episodes from the series. I'll have to take a look in the house, I think we still have them. Pretty sure my twin boys that are younger than him inherited his children's library.
EDIT: I went looking through my boys shelf, and this is the only one I could find. It's a loose adaption of the episode Fallen Angel:
