Map - paper - Bremen, Northern Zone Layer System, 2nd Edition N.E.52/6 Europe (Air) Geographical Section General Staff No.4072, published by War Office 1940. Grid amended September 1943. Compiled and drawn at War Office 1939.
Signature/Marks and Type
BREMEN / NORTHERN ZONE LAYER SYSTEM / (LAYER STEPS CORRESPOND TO THOSE ON THE R.A.F. CONVENTIONAL SIGN CARD) / 2nd Edition / N.E. 52/6 / 1:500,000 EUROPE (AIR) / Geographical Section, General Staff, No. 4072. / Published by War Office 1940. / 2nd Edition 1942. / Grid amended September 1943. / 100,000/1/45/18MRS/632 / Compiled and drawn at War Office, 1939. Heliographed at Ordnance Survey, 1940. Printed
Map - Bremen, 2003.436. The Museum of Transport and Technology (MOTAT).