Here are 3 official photos released by GMH Public Relations.
These particular photos were sent to the USA for use
in the General Motors publication GM World.
I scanned the stamps that appear on the back of each photo.
I would assume that the photographer is Raymond E Vogler.
Each photo has a stamp that catalogues the pic by GMH and also a stamp from GM World dating when the photo was received.
Each pic also has a typed strip of paper glued to the back with a short description.
The wagon text reads: "Three quarter rear view of the improved Special Station Sedan".
The sedan text is missing.
The van text reads: "Improved Holden Panel Van".
I have seen similar pics of the different models taken in the same location.
Regards
Alex