Marc spotted some more Australian War Memorial images. These are all public domain images.

1) http://www.awm.gov.au/collection/014793/

1943-05-05. NEW GUINEA. THIS PHOTO SHOWS TALKIE EQUIPMENT BEING FITTED INTO A JEEP WHICH CAN GET TO AREAS WHERE BIGGER UNITS CANNOT. (NEGATIVE BY BROWN & BAGNALL).

2) http://www.awm.gov.au/collection/063079/

SOUTHPORT, QLD. 1944-01-13. A JEEP OF THE 4TH ARMOURED BRIGADE, FITTED WITH PETROL DRUM FLOATS NEGOTIATING THE NERANG RIVER. SHOWN ARE: SX28155 SAPPER R. D. SYMONS (1); SX20700 LANCE CORPORAL D. C. HOLLAND (2).

3) http://www.awm.gov.au/collection/061672/

PALANKO, NEW GUINEA. 1943-12. TROOPS OF THE 26TH AUSTRALIAN INFANTRY BRIGADE RIGGING UP A FRAMEWORK SO THAT THEY CAN HAUL A CRASHED JEEP BACK ON TO THE ROAD.

4) http://www.awm.gov.au/collection/068818/

NORTH OF CAIRNS, QLD. 1944-08-24. CLOSE UP OF A JEEP CAPSTAN ATTACHMENT WHICH WAS USED TO ASSIST THE JEEP UP A STEEP SANDY SLOPE.