Getty Images Archive

All contents © copyright 1999-2014 Getty Images. All rights reserved. Embedded here by permission.

Rock 'n' roll singer and actor Elvis Presley (1935 - 1977) performs at the Las Vegas International Hotel, August 1969. (Photo by Pictorial Parade/Archive Photos/Getty Images)

Elvis Presley Arrives At The Hilton Inn - June 21, 1973

Elvis and Frank Sinatra

LOS ANGELES - MARCH 26: Crooner Frank Sinatra welcomes back Rock and Roll star Elvis Presley after his stint in the US army on his self titled TV variety show on March 26, 1960 (the show aired May 12, 1960) in Los Angeles, California. (Photo by Michael Ochs Archive/Getty Images)

BURBANK, CA - JUNE 27: Sit-down shows of the Elvis comeback TV special on June 27, 1968.(Photo by Michael Ochs Archives/Getty Images)

1964: American rock n' roll singer and actor Elvis Presley (1935 - 1977) with a circus elephant and co-star Barbara Stanwyck (1907 - 1990) during location filming of 'Roustabout', directed by John Rich, in the San Fernando Valley, California. (Photo by Alan Band/Keystone/Getty Images)

BURBANK, CA - JUNE 1968: Opening sequence of the Elvis comeback TV special filmed in June 1968.(Photo by Michael Ochs Archives/Getty Images)

Candid shot of Elvis on horseback

BURBANK, CA - JUNE 27: Rock and roll musician Elvis Presley performing on the Elvis comeback TV special on June 27, 1968 in Burbank, California.(Photo by Michael Ochs Archives/Getty Images)

BURBANK, CA - JUNE 27: Gospel Segment of the Elvis comeback TV special on June 27, 1968.(Photo by Michael Ochs Archives/Getty Images)

Elvis Presley New York Press Conference - June 6, 1972