比较 Essex (New Series 1913-) n XXXVI.16 (includes: Birch; Layer Marney) - 25 Inch Map

比较

Essex (New Series 1913-) n XXXVI.16 (includes: Birch; Layer Marney) - 25 Inch Map

Topographic maps

National Library of Scotland

Ordnance Survey

1920

1923

Ordnance Survey

1:2 500