While re-watching the library scene I saw some interesting pages – the page before the Gulliver illustration and the Don Quixote illustration are the same and then there is another before the Captain Nemo illustration (having troubling attaching screen shots, my apologies). Even though there are clearly stories in between as Henry flips through the pages, all three pages shown are from the “The Water Babies, a Fairy Tale for a Land Baby” by Charles Kingsley (1863). https://en.wikipedia.org/wiki/The_Water-Babies,_A_Fairy_Tale_for_a_Land_Baby
Disney also had a “Water Babies” sort of segment in 1935. This would be a weird one for them to adapt, but you never know. It’s interesting they included it in the book.
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