| Date Note | wmk of 1831 on base map, date of reference on map |
| Description | Manuscript coloured lines indicating the course of coal seams, with lists of collieries and other notes made by George Bellas Greenough, [1838 or after] on lithographed base map 'General Map shewing the situation of the Tyne Collieries and the principal roads and waggon ways', [1831]. No Greenough number. Scale-1:63,360, 55cm x 49cm. |
| Administrative History | The notes on the map cite two main bibliographic sources: Hutton et al in 'Transactions of the Natural History Society of Northumberland, Durham and Newcastle upon Tyne', vol 1 (1831); and sections presented to the Natural History Society of Northumberland, Durham and Newcastle upon Tyne by John Buddle, esq, in 1838. |