Atlas Obscura discloses a secret library, The Conjuring Arts Research Center , established to preserve the secrets of magic! The not-for-profit organization was established in 2003, “dedicated to the preservation and interpretation of magic and its allied arts.” It was started by William Kalush, who developed a love of magic from the card tricks shown to him by his father, a Marine wounded in World War II. This love of card magic turned to a love of collecting magic books, which now form a wondrous collection of over 15,000 books—some dating to over 600 years old—housed in this hidden location. “I like early books that no one else has ever seen”, Kalush says, sitting in a high-backed, ornately carved wooden chair that wouldn’t look out of place with a wizard sitting on it. “Books of performances pieces, card secrets, many that are unique.” Browsing through the shelves stacked with all things conjuring, you will find obscure books on sleight-of-hand techniques, mentalism, deceptive gambling, the history of magic, and the mysterious secrets of card tricks. One book is the seminal The Expert At the Card Table, which appeared in 1902, written by an S. W. Erdnase. It’s one of the most detailed collections of sleight-of-hand techniques and card sharping, a book so iconic and well-studied within magic circles it is known as “the Bible.” Appropriately enough, S. W. Erdnase was a pseudonym. The real identity of the writer has remained a century-old mystery.