|This needs a stretch. (Feel free to remove when satisfied of completion.)|
Black Magic: Spells and Other Neat Weird Stuff is a book of black magic owned by the supposed sorcerer Ebenezer Crabbe. During the investigation, Velma Dinkley found a newspaper article where it said that Ebenezer's neighbors suspected him of practicing witchcraft. Given that this is a real book of black magic, it is entirely possible he was a real sorcerer.
The Scooby-Doo Show
When entering Ebenezer Crabbe's house, Shaggy and Scooby find a red book that reads "BLACK MAGIC SPELLS AND OTHER NEAT WEIRD STUFF". Shaggy and Scooby start reading the book only for them to turn into monsterous versions of themselves. They then start reading a cure for the transformation in which they transform back into themselves.