[Light trench mortar battery trench map]. Sheet number: [36c SW1]. Area: Lens, squares [not shown] M.25.d, 26.a, 32.c, d; S.1.b, d, 2.a, b, c, d; Angres - Bois-en-Hache - Bois 11 sector, the eastern slope of the Lorette Spur north of Souchez and Givenchy-en-Gohelle. Shows German trenches and wire in red, and British trenches and mine craters with names in black, along a front of 1.3 miles. Seven positions of British mortars of 73rd Light Trench Mortar Battery shown, with arcs of fire and directional arrows to Fosse 6 (presumably the aiming point). Signed on face: A.F. Best Lt, 73 L.T.M.B., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 511, Manuscript on reverse: Loos [actually some distance south] Positions, 73rd TM Battery 1917, Lt A F Best, 9th R Sx Regt.
Battle of the Somme - [Australian [?] Divisional Defence Scheme]. [Trenches to approximately the end-1916]. Reference for 12th M[achine] Gun [Company] Positions, 12th A[ustralian?] L[ight] T[rench] M[ortar] Bty Positions, SOS relay stations, rest stations, infantry posts, Lewis gun positions, bombing posts, observation posts, snipers posts, and Strombus horns. Signs for wrecked tanks. Detail and grid black; contours blue; divisional boundaries green; Brigade boundary brown; German trenches red; British trenches black; Reverse Line, SOS Line and artillery zone 1-4 yellow; MG positions blue; Intermediate Line, rest stations and SOS relay station and bombing posts red; infantry posts and trench mortar battery positions brown; snipers posts green; Strombus horns blue; OPs yellow., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC15; envelope_number: 398, Manuscript map on stout tracing paper showing British defence scheme, possibly for ANZAC Division. Used by Major J. C. Thomson MC (OC 20th Siege Battery, 8-inch hows).