I just ran across your post. I know its old and you may not look at this again. Stuart Purvines passed away some years ago and I believe his granddaughter took it over. However I do have Elsie's address even though the last newsletter I have is around 1994. hope it will help...it will get you started in the right direction anyway.
Elsie Eschbach 105 W Washington Ave #29 Yakim, Washington 98903
She may have passed away by now too. I too have part of the book I printed out which is family 5. I am a Purviance too. Hope you find what your searching for.