I have a box set of vinyl records called The Sound of Leadership from 1956. It was a promo set given out to record executives and included Jailhouse Rock by Elvis Presley before he had released any records with RCA. They are 45s with singles on each side from a lot of different artists. It originally had 8 records but mine is missing 1. I have the one with Elvis but am missing #4 (the backside is #13). It has the booklet and all of the paperwork in the box. I’ve included pictures of an old eBay listing that had a good description (listed for $999) and a current eBay listing for $1299.99. See my other ads for jewelry, artwork, home decor and more.