Given that Aborigines were slowly getting the vote between the 1920s and the last vestige in 1967, the idea that voting citizens were being scalped for money is supremely bizarre.

I definitely want to see a source for that. While I'm not heavily into fighting for native rights myself, I hang around a few people that are, and I think that this little nugget of information would have made its way into discussion amongst all the other horrible things that have happened to Aborigines over the years.