Key of Solomon
From Super-wiki
Key of Solomon
The most famous and important of all Grimores, or handbooks of Magic, containing the actual words and instructions of King Solomon Himself. He instructs his followers on how to summon and master spiritual powers.
1.22 Devil's Trap
Sam: Bobby, this book.... I’ve never seen anything like it.
Bobby: Key of Solomon? It’s the real deal, alright.
And
Bobby (hands the Key of Solomon book to Sam): Here take this. You might need it.
And
The Impala is parked by some train tracks. Sam is looking through the Key of Solomon book on the roof of the car, spinning a marker in his hand.