The King of Rock 'n' Roll: The Complete 50's Masters is a five-discbox set compilation of the complete known studio master recordings by American singer and musician Elvis Presley during the decade of the 1950s. Issued in 1992 by RCA Records, catalog number 66050-2, it was soon followed by similar box sets covering Presley's musical output in the 1960s and 1970s. This set's initial long-box release included a set of collectible stamps duplicating the record jackets from every Presley LP on RCA Victor, every single that had a picture sleeve, and most of his EP releases. The set includes a booklet with an extensive session list and discography, and a lengthy essay by Peter Guralnick. It peaked at #159 on the album chart and was certified a gold record on August 7, 1992, by the RIAA. Further certifications were for platinum on November 20, 1992, and for double platinum on July 30, 2002.