Jeff Smith. Bone: Out from Boneville. Scholastic, 2005 (originally published 1991-1992). 138 pages.
It’s a very nice book, but it’s only the start of the story. I knew there were nine books, but I’d assumed the others were sequels. Turns out you need to spend ~$90 on a complete set to see what happens. Kind of unreasonable, considering that these days you can get the same sort of thing from free web comics.