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Date
Neilson had served in the army, failed as a builder and then as a burglar, and so had tried armed robbery, which is what he was doing when on this date, he became a murderer.
As burglary had not provided the income he expected, he started robbing post offices, dressed in a black balaclava, which is how he earnt his moniker. His violence had been escalating and he had already non fatally shot another worker.
Before he was finished, he would make the Post Office a deadly profession...