Vintage ballpoint signature, “Best wishes, Martin Luther King,” on the inside flap of a color Hertz rental car folder measuring 8 x 7.5 open. Accompanied by a 1973 TLS from the original recipient, who states that “I was in O’Hare in Chicago, saw Dr. King arriving, and reaching for the only paper immediately available, asked for his autograph....” In fine condition, with a couple of small pencil notations to top edge of folder. RRAuction COA.