I read from Percival’s Planet for the first time last week at Chatham University in Pittsburgh, and I had the very good luck to have Jan Littrell of Chatham in attendance.  Her husband Tom Hogan is a Tombaugh buff — and happened to have not one but TWO IDENTICAL autographed Clyde Tombaugh posters at home.  And — this being Pittsburgh — Tom just went and handed one over to me.

There it is — Clyde’s perfect signature, bottom left.  Bonus signature: J.W. Christy, discoverer of Charon, Pluto’s largest moon. 

Thanks, Tom and Jan!