Liber Spirituum is a high-quality photographic reproduction of Paul Huson's personal grimoire. This facsimile reproduction has maintained all of Huson's corrections, including torn, pasted, missing pages and his hand drawn and renumbered folios. Preserved as well are the unique characteristics of the original grimoire paper as it has aged through the decades.

In 1966, as an apprentice mage, Paul Huson began the work of constructing his personal Liber Spirituum or Book of Spirits. The origins of his work in fact have their genesis a number of years before he took up the pen to illuminate the pages of his Book of Spirits. It was in his tender youth that Paul's interest in matters magical began. It was his insatiable curiosity and thirst for knowledge that would eventually lead him to knock on the doors of Dion Fortune's Society of the Inner Light in 1964, as well as studying the practices of the Hermetic Order of the Golden Dawn and the Stella Matutina under the aegis of Israel Regardie. Drawing on this wellspring of knowledge and such venerable works as the Key of Solomon, The Magus, Heptameron, Three Books of Occult Philosophy as well as others set down a unique and informed set of rituals, in addition to employing his own artistry in the creation of distinctive imagery.

Using the highest quality photographic reproduction and printing methods, Paul's personal grimoire has been faithfully and accurately reproduced for the first time. In addition to preserving the ink quality and use of gold and silver paint, this facsimile reproduction has maintained all of Huson's corrections, including torn, pasted, missing pages and his hand drawn and renumbered folios. Preserved as well are the unique characteristics of the original grimoire paper as it has aged through the decades. In this way, the publisher has stayed true to Paul Huson's Book of Spirits as it was originally drawn and painted.