I've been going through old photos and trying to update the information about the aircraft depicted. I'm currently working on a batch of KB-29 tanker photos. One photo shows five aircraft parked on a ramp somewhere. The farthest aircrafts tail number cannot be seen due to the boom from the third a/c blocking it out. It's the fourth a/c I'm unable to locate in Baughers lists, and it seems to fall in a ten s/n hole. The tail # is 4469761 which would drop it in the middle of a block of B-29B-60-BW aircraft (and that's using a 5X loupe to read the little bugger!).
The other a/c are 4484047 Bell-Atlanta B-29B-55-BA, 4483924 Bell-Atlanta B-29B-45-BA, and closest is 4484151 Bell-Atlanta B-29B-65-BA. I'm guessing 91st ARS. The tail's have a huge dark square (insignia blue?) with an 'I' in it. The vertical tail tip trim appears to be orange and white (or yellow) candy cane stripes as is the shroud around the boom attach point fairing. The colors are just a SWAG as the photo is in black and white but tonally don't appear to represent black and red paint.
