"Trenches &c. corrected to 10-9-17." "[2nd] F.S. Co. 1136 22-9-17. Printed by No. 2 Advanced Section, A.P. & S.S." Grey base map, with red trenches and tactical intelligence. Message Form on reverse., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 497