Imperial Japanese Airways was created in 1938.
Imperial Airways was created on 1924-03-31.
Hellenic Imperial Airways was created in 2006-05.
Imperial Japanese Army was created in 1868.
Imperial Japanese Navy was created in 1869.
Imperial Japanese Naval Academy was created in 1866.
Imperial Airways ended in 1939.
There is some Imperial Airways stuff at the Croydon Airport Society archive (http://www.croydonairport.org.uk/)
Imperial Japanese Army ended in 1945.
Imperial Japanese Navy ended in 1947.
Yangon Airways was created in 1996.
IBC Airways was created in 1991.
Aviator Airways was created in 1992.