Pseudomonarchia Daemonum is a spirit catalogue associated with Johann Weyer. Its transmission helps explain similarities and differences in the later Ars Goetia.
Astrology has supplied language and organizing systems to Western esoteric texts. Its historical role should be distinguished from demonstrated predictive effectiveness.
Primary sources provide direct evidence for a text, community, or historical setting. Reading them well requires context, precise citations, and comparison with other evidence.
An occult diary records religious or magical work as it occurs. Separating observations from interpretations makes reflection and comparison more reliable.