G'day,Bugsy: I know they started out with Larrikin Publishing ... I remember arguing points of design philosophy with the designer of the first one - back in the early 80s!.
Since then, Warren Fahey (Chief Larrikin) has gone off in other directions. He certainly sold the Larrikin Record label to Festival and I did hear that larger publishers picked up the Bogle books.
Regards,
BobBolton