Qantas were operating Boeing B707 and DC-4 for passenger flights and retained a DC-3 and the two Hawker-Siddely HS125 for crew training.
Found a nice shot of Flinders Island Airlines Beech 18 taken at Point Cook airshow in 1974 on Airliners.net
Stationair8,
Two DC-3, -EDC and EDD. EDC wound up in Botany Bay, EDD was the fire wreck in Cairns for years. Don't forget the L-188 Electra of that era.
If it's the Beech 18 I think it is, that's now at Bankstown, in good condition, and currently the subject of much TLC.
Tootle pip!!