Not all ‘classic’ children’s literature ages well, and not even all of Dr. Seuss’s books have aged well. Some have racist or sexist imagery that was mainstream in the ’60s and ’70s but not now.
Hop on Pop, however, has aged well. And not just from its visuals, but from its educational value as well. The repetition and rhyme, even the size of the type, makes it a book that kids want to read. When I read it aloud, the kids almost instinctively join in.
And it’s just silly enough to keep their interest while reinforcing their reading skills.