Ah-ha! I was thinking of the September-November '42 'maximum extent of Axis conquest' map and that turns out to be the August 1942 'maximum extent of Imperial Japan's conquests' map.
Although I should point out that while that map hits on the maximum extent of the IJN's reach, followed by Imperial Japan's oceanic empire slowly deflating, the area of Japanese conquest in China continued to expand until the war ended.
Ah-ha! I was thinking of the September-November '42 'maximum extent of Axis conquest' map and that turns out to be the August 1942 'maximum extent of Imperial Japan's conquests' map.
elm
cool stuff
Although I should point out that while that map hits on the maximum extent of the IJN's reach, followed by Imperial Japan's oceanic empire slowly deflating, the area of Japanese conquest in China continued to expand until the war ended.
elm
so that map tends to be a bit misleading
Maybe there is another one? I didn't look through all the files. You are right!
This looks like a lot of fun for WWII buffs!