Vatican Secret Archives popes also survive, including John VIII (pope 872-882) and Gregory VII (pope 1073-1085). Documentation is scant before the 13th century. Since that time, notable documents include items such as Henry VIII of England's request for a marriage annulment, a handwritten transcript of the trial against Galileo for heresy, and letters from Michelangelo complaining he had not been paid for work on the Sistine Chapel. The Archives also support their own photographic and conservation studios. The entrance to the Archives, adjacent to the Vatican Library, is through the Porta di S. Anna in via di Porta Angelica (rione of Borgo). New
The Horus Heresy (novels) Heresy and "Warhammer 40,000" canons; still other non-series Horus Heresy material has been eventually incorporated into the work. A significant development was the 2012 initial release of the "Horus Heresy" miniatures wargame expansion, which repositioned the concept as a foreground element within the "Warhammer 40,000" gaming system while highlighting the importance of the Horus Heresy to Games Workshop's product lineup and the related universe. The expansion is reputedly developed in coordination with the book series, and includes new material and information about the Horus Heresy and the fictional universe; it joins the series and other works as an authoritative source