I'll keep this at the top for a while. It may be too late for your Christmas shopping, but there is always January.
Here is my suggestion:
Russell Schroeder's great books on the "lost treasures from the Walt Disney Music Library" are not only filled with great songs, but have interesting stories you may not find elsewhere, as well! Click the image to get to the page that shows how you can order them!
(When Vol.1 came out, the late Roy E. Disney bought 3 copies!)
For those of you who do not read sheet music, there exists software in which you can scan the pages and it plays the music back to you! More info: click the image!