4 North Bailey (Alington House), site of tower on 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 | Whiting, C E | 1933 | The castles of Durham in the Middle ages | p 130 |
| 3 | Jones, W T | Dec-1921 | The Walls and Towers of Durham (IV) | 1918-22, p.357 |
| 4 | Department of Archaeology Durham University | 1991 | Urban Archaeological Database | |
| 5 | Department of Archaeology Durham University | 1988 to 1991 | Durham City Archaeological Conservation Management Project Archive | |
| 6 | Department of Environment, English Heritage, Historic Buildings and Monuments Commission | 1950 | List of buildings of special architectural or historic interest, also known as "Greenbacks" | LB Volume, Map & Item: 1914, 14, 246 |
| 7 | 4 North Bailey, Durham | |||
| 8 | 4 North Bailey | |||
| 9 | 4 North Bailey | |||
| 10 | Clack, P A G, Gosling, P F, Northern Archaeological Survey | 1975 | Archaeology in the North Gazetteer 1975 | NZ24SE21 |
| 11 | Unknown | Castle Walls Survey Documentary Material | (1918-22, p.3) | |
| 12 | Ryder, P | 1991 | Buildings Survey, 1990-1991 | p 73 |
| 13 | Ryder, P | 25-Oct-1980 to Dec-1990 | Durham Buildings Survey - Fieldbook 1 | p 72-73, 80 |
| 14 | Roberts, M, Pevsner, N, Williamson, E, Yale University Press | 2021 | The Buildings of England County Durham | page 353 |