Pixar Online Library
graphics.pixar.com
graphics.pixar.com
It is worth noting that Catmull attributes their original publish everything attitude (against an industry standard for trade secrets) as formative in acquiring the talent and industry came early on.
[1] http://www.cartoonbrew.com/artist-rights/ed-catmull-on-wage-...
http://www.cs.berkeley.edu/~sequin/CS284/PAPERS/CatmullClark...