Color semi–glossy 12.75 x 8.5 photo of Stevie Ray Vaughan’s final performance, signed in silver ink by the photographer, “Robert M. Knight,” who adds “AP” to the lower left corner. Double-matted with a nameplate, “Alpine Valley, August 26, 1990,” to an overall size of 20 x 16. In fine condition. Hours after performing with Double Trouble and Eric Clapton at the Alpine Valley Music Theatre in East Troy, Michigan, Vaughan and three members of Clapton’s entourage perished when adverse weather caused their helicopter to crash into a nearby ski hill. A bittersweet image of Vaughn’s last show, captured by one of rock’s most legendary photographers.