"Bunyip" is the name usually given to mysterious water monsters in the the outback of Australia, so it is not surprising it turned up in these newspaper accounts. They do not appear to have been discovered by any other researchers. The first one occurred in the River Murray, which is the second longest river on the continent, and it forms the border of New South Wales and Victoria. The location, however, was just across the border in South Australia, Berri being situated at 34° 17' S, 140° 36' E, not far from Renmark. The article is from page 4 of the Murray Pioneer and Australian River Record (Renmark) of Friday 1st January 1932.