I wanted to turn you all onto a website that I think is just invaluable. The Encyclopedia of Disney Shorts website is a great reference tool and has a wealth of information you can't find anywhere else. It has a comprehensive list of all of Disney's short films - even unproduced shorts, many of which I've never even heard of. Cartoons can be browsed alphabetically by title, or a full search can be produced.
Especially helpful is the list of contributing animators on shorts as well as dates and circumstances of the showings of each cartoon. Readers are encouraged to submit comments, which is also helpful. I don't know where they get their information but it really is a great source of reference.