What to read after Proofs of a Conspiracy against all the Religions and Governments of Europe?

"Proofs of a Conspiracy against all the Religions and Governments of Europe, carried on in the Secret Meetings of Free-Masons, Illuminati and Reading Societies, etc., collected from good authorities" is a book by John Robison alleging clandestine intrigue by the Illuminati and Freemasons. The secret agent monk, Alexander Horn provided much of the material for Robison's allegations. Robison goes through great detail about Adam Weisshaupt, founder of the Order of the Illuminati, and his infiltration of the Free Masons with a grand plan to overturn the social and political order of Europe and his successes.