Didier Ghez, a Disney historian, who has written or worked on many amazing Disney history books, has a blog that I follow. He shared that an English magazine - Animator - put an archive up of their issues.
Issue 20 has two Snow White articles written by some very accomplished Disney historians:
Behind the Magic Mirror
It took 750 artists three years to produce Snow
White and the Seven Dwarfs. Richard Holliss looks at the innovation that
went on behind the scenes.
Disney‘s fabulous folly
Brian Sibley tells the story behind the making of Walt Disney’s first animated feature, Snow White and the Seven Dwarfs.
The archive features many interviews with Disney animators and I'm sure there are some other Snow White related articles. Enjoy!