“The frontispiece of the book was an engraving that showed Dr. John Dee, personal astrologer to Queen Elizabeth I of England, as he and his assistant, Michael Kelly, raised the spirit of a dead woman in an English churchyard at midnight. The two men wee standing inside a chalk circle drawn on the ground. The border of the circle was covered with strange symbols and words. Just outside the charmed circle hovered a figure in a long nightgown. On her head she an odd ruffly bonnet, the kind they once buried women in. Lewis kept turning back to the illustration because it frightened him. But he read the rest of the book.” [The House with a Clock in its Walls, 67-8]

Johnny Dixon later happens across the same book and black-and-white illustration [The Hand of the Necromancer, 133].

Lucius Mickleberry uses John Dee’s spell, the Incantation of Unbinding the Dead, against Immanuel Vanderhelm [The Doom of the Haunted Opera, 79].

Among the so-called “magical items” that Johnny Dixon sees in the office of H. Bagwell Glomus is a mirror that once belonged to Dee [The Mummy, the Will, and the Crypt, 7].

Dee tutored Jarmyn Thanatos in one of his many guises [The Bell, the Book, and the Spellbinder, 100].