Found this a good while back while perusing cartoon cards on Ebay. It’s a 1963 coloring book featuring Newspaper Enterprise Association comics from Saalfield Publishing.
I have to admit, I’ve never heard of Morty Meekle, Tizzy, Priscilla’s Pop (or Priscilla for that matter), or Freckles or any of his friends:
Here’s a scan of one of the Tizzy cartoons:
That’s actually a really nice gag, but for a children’s coloring book?
Anyway, check out the entire book here. And maybe print one out to color?
If you do color one, send it over and I’ll post it! Enjoy!