Series Number Id: GSGS 3313. Sheet number: part of sheet 57. Training area for Somme Battle. "Ordnance Survey 1916." "Enlarged [and redrawn] from 1:80,000". Area northwest of Doullens. Detail and grid (cross-hatched caps) black; contours brown; water blue. The same size as a regular series sheet. Early 1916 printing. Manuscript on face: various battalion and brigade markings for training exercises., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC14; envelope_number: 373.
