I am not an autograph hound, but in 1977-78 I saw "Chicago" in Chicago and was fortunate enough to have my Playbill signed by Chita Rivera and Gwen Verdon. Definitely a prized posession.
"He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion."
-- Author Unknown