Microfilm of originals (1685-1721) in: Longleat House, Warminster Wiltshire, from the archives of the Marquess of Bath.
"Forming a section of the Portland papers."
Microfilm. East Ardsley, Wakefield, West Yorkshire, England : Microform Academic Publishers, [2005?], c1970. 10 microfilm reels ; 35 mm. "Film no. 96698."