For researchers and students of the occult, several digital editions of the are available through academic and archival platforms:
Johann Weyer (1515–1588) was a Dutch physician and occultist, a student of Cornelius Agrippa. Unlike many witch-hunters of his era, Weyer argued that accused witches were mentally ill or deluded, not willingly in league with Satan. However, he still believed in demons as real, malevolent spirits. De Praestigiis Daemonum sought to distinguish between genuine demonic possession and natural illness. The Pseudomonarchia served as a “field guide” to demonic hierarchy, borrowed heavily from earlier sources like the Liber Officiorum Spirituum (a medieval grimoire) and pseudo-Albertus Magnus.