GPO Map of the Swan Hill Estate Shrivenham

This map measure 90cm X 72cm and is printed on pink technical drawing paper. It has a note on it saying that it was received from the GPO (General Post Office) on 2nd June 1968 and shows the layout of what was called then the, 'Swan Hill Estate,' (Colton Road, etc). It shows the layout of the Telephone line junctions and circuits, both overhead and underground.