
East Asia Army Air Force sheets are identified by an NH, NI, NJ, NK or NL followed by two numbers, in the upper righthand corner. Sometimes, between the title and the NH/NI/NJ/NK or NL you will see RESTRICTED. This is just a variant of the base sheet.
NI52 Nagasaki / NH52
Kagoshima

NH52 Nagasaki / NI
54 Tokyo

NK53 Kanazawa / NI54
Tokyo

NI53 Osaka / NI54
Tokyo

NJ50 Pei-Ping / NJ51
Ryojun

NJ53 Kanazawa / NJ54
Sendai

NJ53 Kanazawa / NL52
Harbin

NK50 Jehol / NK51 Shen-Yang

NK52 Vladivostok / NJ
52 Keijo

NK53 Vladimiro-Aleksandrovshoye
/ NL54 Otomari

NK54 Hakodate / NK55
Nemuro

NL50 Buir Nor / NL51
Tsitsishar, China

NL52 Harbin / NL53
Spassk-Dal’Niy
