A RAW autograph
Here's a sweet picture: Leila Raven over at Temple Illuminatus holds up her autographed copy of ILLUMINATUS! The photo caption for the posting says, "From when I first met Bob, many years ago now & he signed my very well worn copy of the Illuminatus Trilogy. RIP RAW." (via @Robert_A_Wilson on Twitter.)
Despite my long history of going to libertarian gatherings and science fiction conventions, I never met Wilson. I did meet Robert Shea once, at a worldcon in Boston.