If you are interested in the subject matter but cannot access the PDF, these sources cover similar historical ground:
Recommended for those interested in a non-Christian, scholarly view of the archetype. detailed in the companion volume, Lucifer: Praxis 'Lucifer: Princeps and Praxis' by Peter Grey - Paralibrum 3 Oct 2025 — Lucifer Princeps Pdf
Skeptics note that the earliest known physical manuscript dates to 1898, not the 1500s. They suggest a French occultist (possibly linked to Stanislas de Guaita or Joséphin Péladan) created the text as a "black mirror" to the Key of Solomon . The title's hype, they claim, is purely modern. If you are interested in the subject matter
Lucifer Princeps by Peter Grey is a dense, historical, and mythological study of the origins of the figure of Lucifer, moving far beyond the simplified "fallen angel" tropes of popular culture. Published by Scarlet Imprint, it is widely considered a foundational text in modern esoteric and "crooked path" studies. The title's hype, they claim, is purely modern
" : Though not "Princeps" by title, it is a seminal 20th-century work regarding Lucifereanism and the Cathars. The full text is available via the Internet Archive .