Now here's a perfect fit -- the Duke's treasured signature on 1st day cover featuring 4 Old West-related stamps: 1860-1960 Pony Express, Sesquicentennial Kentucky Statehood, 1858-1958 Overland Mail, and commemorative Daniel Boone. What, no Alamo? Signature in black marker is a nearly pristine 9/10 or better with a grand flourish to the "J". Envelope postmarked July 30, 1970 and is NRMT, stamps EX.