Series Number Id: GSGS 2794. Sheet number: parts of 29, 37, 44, 51, 57, 62b, 66c, 70d. Edition number: 3. Billeting areas map, 23 October 1918. "Printing Coy. R.E., W.O.B/1917" in red overprint [this is the serial number, not the date]. "War Office, May, 1918. Revised edition." Grey detail, water blue, red overprint. Area inland to east of Bruges, Thielt, Courtrai, Tournai, St. Amand, Valenciennes, Cambrai, Le Cateau, St Quentin, Chauny, and south to Beauvais, Compiegne and Vailly (Aisne). Shows areas for Belgian and French, L. of C., G.H.Q. Troops, Second Army, Fifth Army, Third Army, Fourth Army, and French., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC21; envelope_number: 659.
Series Number Id: GSGS 2794b [with "b" in black overprint]. Hospitals, railways and billeting areas map, January 1918. "Printing Section, Depôt F.S.C., R.E., G.H.Q. (623x)" in red overprint. "War Office, July 1915." Grey and blue base map with black and red overprint. Shows 3 classes of railways, "revised June, 1917", in black overprint. Shows front line on 31-1-18, and Army, L. of C., GHQ, Belgian and French areas in red overprint. Red stamp in left margin reads: Director General of Medical Services, British Armies in France, 26-1-18. Manuscript additions on recto show locations of British hospitals., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC21; envelope_number: 658.