"Is this what you seek?" (pardon my mixing theatricals)

The Pastoral Symphony Uncut
http://www.youtube.com/watch?v=up56LG_rIEw
Uploaded on Nov 25, 2010
The best quality copy of the fully uncut coy of Fantasia's infamous Pastoral Symphony segment. This has been censored since 1969 by violently cropping the offending scenes so the little black centaur(whose name is Sunflower btw) can't be seen.

Disney FANTASIA trailer
http://www.youtube.com/watch?v=N1cEg8NWRvw
Uploaded on Jan 24, 2007
the original extra-long trailer for the famed 1956 Superscope reissue of "Fantasia"
Il lungo "prossimamente" realizzato per la riedizione del 1956 in Superscope di "Fantasia" di Walt Disney.

These may not be useful for putting in a restoration, but they may help for determining "original" content, timing, and such.
They come and go, so keep checking back for returns and new ones.