There was a wonderful fan magazine published from 1986 to 2009. I have been slowly accumulating all the issues and am currently missing only three more issues. Two issues featured Snow White's Scary Adventures - issue 4 and 13. While I'm still waiting to find issue 4, I have issue 13.
It's a very interesting look into the original attraction before it was update.
While you can no longer buy very early issues, you can purchase them on CD-Rom. The Walt Disney Family Museum acquired all the content to the magazine and you can now purchase back issues as well as the CDS.