A book within a larger compilation
The Ars Goetia is the opening part of The Lesser Key of Solomon, also called the Lemegeton. The work presents five parts, each concerned with a different group of spirits or a different kind of ceremonial text. The Goetia is the part that enumerates 72 named spirits and describes their ranks, appearances, offices, and seals.
Its attribution to King Solomon is part of the work’s own framing. That literary and religious claim is distinct from a documented author or date of composition. The numbered catalogue is the work’s organizing principle.
The 1904 text and 1916 seal plates
S. L. MacGregor Mathers translated the influential 1904 English edition, which Aleister Crowley edited. Wikisource hosts a transcription and scan of that edition.
The seals displayed here are cropped from the separate 1916 Chicago edition edited by L. W. de Laurence. Its plates and the 1904 text are different printed witnesses, so a line of prose and a seal crop may reflect different editorial choices.
Sources: The Lesser Key of Solomon, transcribed text · 1904 Mathers–Crowley edition scan · 1916 de Laurence edition, Project Gutenberg
Ranks, names, and variants
A rank such as “duke” or a claim that a spirit commands legions is a classification inside the grimoire, not an independently verified fact.
Names and seals can vary between copies and editions. A changed spelling or a line in a seal may be a variant rather than a different entry. The 1904 text and 1916 plates preserve particular forms within that longer history.
Sources: The Lesser Key of Solomon, transcribed text · 1916 de Laurence edition, Project Gutenberg