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!