I found this on line somewhere
it is dated April 20, 1968
but as you see the autograph by Alice is dated 1998.
Funny thing are the names listed below the picture.
Glen is Fabian Buxton and Neal Smith is Neal S. Myth.
As the caption reads "Formerly the Nazz, now ALICE COOPER..."
I wonder if this was a typo or did Neal & Glen use an alias
during those days. I never read anything about them using one.