In 2005 I heard Dave Sims tell Neil Gaiman that he would send an autographed copy of Cerebus to anyone who wrote him a handwritten letter. I figured he had a stack of a single issue already completed. Just as a test, I specifically asked him to sign a copy of his favorite issue he ever did on Cerebus and explain why it was his favorite. To my surprise he promptly responded with 3 issues, autographed, from 5 years earlier! Attached is a picture of the letter he wrote explaining why Going Home #s 25-27 were his favorite.