27 Old Elvet, St John's House, Durham City (Durham City) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Department of Archaeology Durham University | 1991 | Urban Archaeological Database | |
| 2 | Department of Archaeology Durham University | 1988 to 1991 | Durham City Archaeological Conservation Management Project Archive | |
| 3 | 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, 15, 320 |
| 4 | 26a & 27 Old Elvet, Durham | |||
| 5 | 27 Old Elvet, Durham | |||
| 6 | Ryder, P | 1991 | Buildings Survey, 1990-1991 | p 92 |
| 7 | Ryder, P | 11-Dec-1990 to 25-Feb-1991 | Durham Buildings Survey - Fieldbook 2 | p 11, 26 |