The Historia Septentriae is a history of the Barony of Septentria from AS VIII (1974) to AS 37 (2003) penned by “Brother Thomas of the Order of St. Crispinus.”
The Historia Septrentriae The Historia as a series of web pages, at the Internet Archive. Note that page 5 is not available, however the content is in the PDF version below.
The Historia Septrentriae A downloadable PDF from the Internet Archive. An illuminated version was also prepared, but is lost.