George Philip & Son, Ltd. ; Compiled from Official Sources ; Edited by George Philip, F.R.G.S. ; The London Geographical Institute.
Coordinates approximate (based on Greenwich meridian).
Relief shown by gradient tints, hachures, spot heights.
Legend: Railways, canals, forts, boundaries, various roads, woods, battlefronts (July 1st, 1916 and Oct. 1st, 1918).
[Ancillary map]: The Western German Frontier and The Line of the Rhine : On half the scale of General Map