"Portions of sheet 36c NW 1, 2, 3 & 4." Penciled in upper margin: October 14th 1915. "1st Army Ptg. Sec. R.E. (564)". Detail, grid & contours black; water and 2-fig coordinates blue; German trenches red., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 530
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