iv came across a map called germany and its approaches the map is A0 and is in mint condition and I cant find it online I found a 2nd edition of it but I think this maybe the only 1st edition as it at the top it says for official use only of the British war office and its dated 1944
The National Geographic Society printed the "Approaches" map as a supplement for the July 1944 issue of their magazine. They printed several thousand more for the U.S. Army and its allies. It appears that one of those was used as the basis to create this map of the post-war divisions of Germany and Austria. The modifications had to be done in 1945 after the Yalta Agreement. It looks professionally done. As to the value, I haven't a clue, but it is much rarer than the original map supplement.
I hope this helps,
What a great find! Would you be interested in selling it?
Let me know,