St. Chad's College, remains of a tower of town walls, Durham City (Durham City) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Ordnance Survey | Ordnance Survey Archaeology Card AKA National Non-Intensive Archaeological Record (England) | NZ24SE22 | |
| 2 | Page, W, Curtis, M, Dawsons of Pall Mall, University of London Institute of Historical Research, The St Catherine Press | 1928 | The Victoria County History County Durham Volume III | |
| 3 | Whiting, C E | 1933 | The castles of Durham in the Middle ages | p 130 |
| 4 | Jones, W T | Dec-1921 | The Walls and Towers of Durham (IV) | 1918-22, p.359 |
| 5 | Clack, P A G, Gosling, P F, Northern Archaeological Survey | 1975 | Archaeology in the North Gazetteer 1975 | |
| 6 | Unknown | Castle Walls Survey Documentary Material |