Edition number: 2. "Trenches corrected from information received up to 22-7-17." "5th Field Survey Co. R.E. (1282) 21-7-17." Detail, grid and contours grey; German trenches and names red; British trenches and names dark grey. Sheetlines at angle to grid north., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 522, Manuscript on face: Stokes [mortar] positions S of Pilckhem.