When Elvis Presley returned to serious live performance at the end of the 1960s, audiences were not simply seeing the handsome young rebel they remembered from the previous decade. The 1968 television special had already transformed his image. Dressed in black leather, lean and intensely focused, Elvis reminded America that beneath the Hollywood movies was still an extraordinary live performer. Then, on July 31, 1969, he opened his engagement at the International Hotel in Las Vegas. It was his first sustained return to live concerts in years, and many people in that room were about to discover that photographs had never quite explained Elvis Presley.
When Elvis Presley returned to serious live performance at the end of the 1960s, audiences were not simply seeing the handsome young rebel they remembered from the previous decade. The…