Which number in the series of Disney classics is the animated "Alice in Wonderland" from 1951?

Explanation

Lewis Caroll's 1851 novel "Alice's Adventures in Wonderland" has inspired countless movies and computer games. Tim Burton's 3D-version is a recent spin-off of the fairy tale, and older ones include the edition from 1971 featuring Peter Sellers, among others. Disney has also used the story in a 1951 cartoon movie, which was the 13th classic Disney movie. Several movies allude to the story, including the Matrix, which had multiple references to the metaphor "down the rabbit hole."