The Stevie Ray Vaughan Fan Club Newsletters were published quarterly between February 1993 and December 1998. They were entitled "Say What" and were published by Craig Hopkins. There were 21 issues produced altogether. From 1999 onwards the newsletters were published on the internet at the now defunct URL srvfanclub.com. Edited versions of them appeared in "The Essential Stevie Ray Vaughan" and "The Stevie Ray Vaughan Anthology"
If anyone has copies of any more issues that they could scan, please get in touch.