Lorna, 'Aussie English' was not by this John O'Brien. This John O'Brien was the pen name adopted by Fr Patrick J Hartigan, a Catholic Priest based around Albury, NSW then Narrandera. In 1911 he was called to a hut near Khancoban to give the last rites to Jack Riley, the man on whom Banjo Paterson based his 'Man From Snowy River'! The author of the book to which you referred wrote under the pen-name on Niño Collutta (?)
When I had the pleasure of visiting Melbourne for 3 months in 1969, I came across a book called 'Aussie English' by our John O'Brien. I copied 'Bloody' directly out of the book but the version you have here differs somewhat. I never could get a copy of the book as I had to come home to the U.S. By the way, I love it!