1. Skelton , R. A. and
Harvey , Paul D. A. , eds. 1986. Local Maps and Plans from Medieval England, 734Oxford: Clarendon Press.
2. Skelton and
Harvey . Local Maps and Plans 4 (see note 1)
3. Skelton and
Harvey . Local Maps and Plans 36 (see note 1)
4. Henry Wheeler , William . 1896. A History of the Fens of South Lincolnshire, 2nd ed., 4Stamford, Lincolnshire: Paul Watkins. 1990, appendix IV,