[Part-coloured lithograph map] London and Morpeth Mail Road. Index Map. Surveyed by Thos.Telford, 1827. Drawn by L. Hebert. [Printed at Lithographic Establishment, Quarter Master General's Office, Horse Guards, London. Scale 1" : 2m. Hebert, a French geographer, was draughtsman to Telford from 1824 to 1827]
