A folding Ordnance Survey map of Lincoln and the surrounding country, laid on linen . Printed beneath "Geographical Section, General Staff. No. 3907. Published at the War Office." (First published by the Director General at the Ordnance Survey Office, Southampton, 1923, with periodical corrected reprints.) Written on verso, in Indian Ink "I.R.P. R.A.F. Digby".
Approx 70cms by 50cms.
