Thanks Lang for the recent lot of photos.
An interesting one is the line up of AIRBORNE GMC's. A quick look at the AWN's shows that approximately 150, GMC, 6x6, 2 1/2 ton, canvas topped special cabin trucks with split diffs are listed between ARN. 89330 and 89487. I found one of these just out of Ballarat a few yours ago and another not far from here. According to the ARN. they were disposed of in 1955.
Regards Rick.