This grouping of Japanese art/prints include a guide that I assume includes a description of each print. I believe they were from very early on in the war since most appear to represent British scenes. They are in great condition and came in a portfolio that was tied with a ribbon.
Your holdings never cease to amaze me. I'm thinking Larry (OpanaPointer) is correct. I'm sure you can get stuff translated.
Forurmaxishistory.com has people who might help. One or two of them could give you bios on every person in the pictures.
A copy of that last one is in the National museum of Singapore: Print - The one above is Yamashita & Percival at the Singapore surrender. Larger painting: 英軍投降《The Meeting of Gen. Yamashita and Gen. Percival》(山下奉文將軍與白思華將軍的會面)(1942年) - 香港文匯報
Certain Victory By Myamoto Sabuto, apparently. I dare say the other prints might be equally well-documented, but am currently struggling while looking from a phone.
Just out of curiosity I thought I would try using the Scan & Translate App on the description portfolio that came with the prints. I know that the language structure might have changed but wanted to get a general description of the print Karidiyanai Conference picture The invincible Imperial Army, which landed enemy in Bantam Way on March 1,, occupied the stronghold Kallijyati airfield of the Ranjo Air Force as early as the next day, destroying the opposition of the enemy well She stuck to the enemy 's capital city Bandung. On the seventh day of the month, I wanted Bandon during the call, for the military who showed me the impatience of one sleeve, the commander Pesmane Nakamizu of the same country asked for a local ceasefire, but I Finally, the following day the Governor-General Chardas Van Starkenpolk appeared at the Kallijyati airport as a bell tower of the army minister Tel Bolten, Director General of the Army, Bengni local government official and so on, Imamura commander saw him. After 16 o'clock, one precious staff of former Lan Kwang Army flying school officials' official residence, once in a room where Ranjo Air Force chiefs consciously made a fight against the other day, they could be covered with a dark colored cloth The big table was sandwiched between the things that came, the destroyed things, and the lights shook vivid light and dark. Imamura commander first asked the governor and the army chief about the possessions he possesses. The Governor said that he had faint eyes and had no power to command. The Army Secretary also asked for surrender only in the Bandung district again and it seemed like hesitating to reply to the unconditional surrender in all areas of the Lanqiang, but the commander of the Imamura Army gave him ten minutes' worth I retired to Chardas which will affect. The picture is a momentary moment when the commander of the Imamura Army ordered the enemy governor to take off as soon as possible. After ordering the battlefield, ought not to surrender to Terbolten