The document discusses several sources that can be used to research the history of Freemasonry, including: 1) Current or former Freemason members, who can provide first-hand insights but are limited in what details they can share with non-members. 2) Websites and blogs supposedly written by Freemasons, which may provide helpful revelations but whose claims would need verification. 3) Historical texts, especially from the 1700-1800s, which incorporate Freemasonry into the historical record. 4) Documentaries about the Freemasons, which can spark theories but would need comparison to other sources. 5) Biblical texts, as some trace