(If anyone is curious, I found a thorough source for the above: Ernest Cashel 1882-1904 It's quite a yarn. Unsurprisingly, I didn't get the story completely right:

Sixty years after his execution, his death note was found and donated to the Glenbow Museum. Titled “Advice to young men”, it warned against “saloons, gambling houses, and the houses of ill-fame”, though it noted
that crime novels were the worst influence of all. It concluded with the suggestion that young men should “stay at home, shun novels, bad company and cigarettes. Don’t do anything, boys, you are afraid to let your mother know.”)