A Wild History - Life and Death on the Victoria River Frontier by Darrell Lewis.
"As I travelled along the roads and back tracks I saw ruins of old stockyards and an occasional grave, including one with a headstone which declared that the person had been "Killed by Blacks"...I even found a few broken boomerangs which brought a sense of immediacy, a feeling that what was 100 years gone in the South was present only yesterday in the North. At the time I didn't realise that this was literally true...."