Blandowski’s Catalogue is one of the most precious items held by the Museums Victoria Archives. It documents natural history specimens collected by William Blandowski (1822-1878) and Gerard Krefft (1830-1881) and colleagues working with First Peoples communities for the National Museum of Victoria (predecessor of Museums Victoria) during an expedition along the Lower Murray and Darling River from December 1856 to December 1857. Murray fishes listed in the Catalogue were later controversially used to describe prominent members of the Philosophical Institute in Blandowski’s 1858 paper Recent Discoveries in Natural History on the Lower Murray. Blandowski refused to hand-over to Professor Frederick McCoy, the National Museum of Victoria’s first Director, many of the specimens collected on the expedition, and associated research notes and illustrations, causing further controversy. Blandowski’s Catalogue has recently been digitised by BHL Australia and is now available to view online.