The Book of the Offices of Spirits is the source manuscript for Johann Weyer's Pseudomonarchia daemonum, although he censored parts of the text that he considered too dangerous to circulate. A more complete version of The Book of the Offices of Spirits is included in The Book of Oberon.
Although the first known appearance of the text is in Weyer's possession in 1563, it is likely much older, but the exact provenance is unknown.
Timeline of related events
1515Birth of Johann Weyer (owned this grimoire)
1536Publication of De praestigiis daemonum (this grimoire influenced Pseudomonarchia Daemonum)
1577Book of Oberon completed (includes this grimoire)
1588Death of Johann Weyer (owned this grimoire)