Series Number Id: GSGS 3062; Sheet number: 36 SW1; Edition number: 6a, Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC12; envelope_number: 329, Manuscript: artillery sectors +amp; arcs (fighting map) for British battery between Pont du Hem and Laventie; British front trenches and sectors in blue crayon; British tracks in red and blue crayon.
