On May 30, the United States Postal Service announced the release of a limited edition Johnny Cash stamp.  Sales of the Forever stamp will begin on Thursday, June 5th at Nashville's Ryman Auditorium, where John Carter Cash, Carlene Carter, Larry Gatlin, and Jamey Johnson will be on hand to honor Cash's legacy. The postage, designed by art director Greg Breeding, features a photograph of Cash that was captured by Frank Bez during the Ring of Fire: The Best of Johnny Cash sessions in 1963. The late-great country music icon joins an impressive group of musicians immortalized by the USPS, including the Beatles, Miles Davis and Buddy Holly.  Here is a selection of artists who have received the Service's approval through the years.