Item 4 - Australian Labor Party Conference delegates 1947

The Australian Labor Party has its origins in the Labour parties founded in the 1890s in the Australian colonies prior to federation. Labor tradition ascribes the founding of Queensland Labour to a meeting of striking pastoral workers under a ghost gum tree (the "Tree of Knowledge") in Barcaldine, Queensland in 1891. The Balmain, New South Wales branch of the party claims to be the oldest in Australia. Labour as a parliamentary party dates from 1891 in New South Wales and South Australia, 1893 in Queensland, and later in the other colonies.
For more information see : https://en.wikipedia.org/wiki/Australian_Labor_Party#History