@JGoldman10,
I'm well aware of most of them. The special features on the blu-rays of some of the animated films talk about how Walt Disney, who was in Europe for business, bought hundreds of books containing fairy tales and stories for the purpose of adapting them.
The blu-rays also talk about the alternate versions of their films, like Beauty and the Beast originally having Belle's sisters, and the Snow Queen in Frozen was originally much more evil.