Series Number Id: GSGS 2742; Sheet number: 57c SW; Edition number: 2b, Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC11; envelope_number: 283, Manuscript in area Guillemont - Ginchy - Delville Wood - High Wood and S of Martinpuich; British trenches and names and line 18th Aug., 4th Sept; MG shown NE of High Wood; manuscript on reverse: CW.