Ohinemuri Regional History Journal 2, October 1964
Among very early geologists who explored this district was Dr R Hauesler, F.G.S. (Lon.), M.R.M.S. (Belg.), M.G.S. (Switz.) etc who for a short period taught at the first Mackaytown school. His son, Hanz Hauesler of Ohope, presented to the Waihi Museum, three microscopic slides showing samples of pure gold. These were used by his father in the preparation of his work, "The Microspical structure of Ohinemuri Gold 1886".