Printed invitation, 6 x 6 closed, opens to 12 x 6, for a private viewing of Linda McCartney's Sixties portrait exhibit, held at The Royal Photographic Society in Bath, England, on October 9, 1992. Signed on the front cover in black ballpoint by Paul McCartney and in black ink by Linda McCartney. In fine condition, with a few light surface marks and handling wear and another signature and inscription on the inside cover. COA Tracks, COA Roger Epperson and RRAuction COA.