"Kids' books that stand the test of time and are enjoyable even as an adult." (Goodreads)
To stave off outraged comments from users of this list, there are already many observations from Goodreads users at the source, along the lines of "It's amazing the sorts of things people think children should be reading." However If this challenge proves popular enough I will publish a further list going beyond book 120, which will, as a result, contain some truly bewildering favourites of the voters.
BTW, I had to slightly alter the original List Name to conform to List Challenges rules.