This file is in the public domain because The photo was taken before 1 January 1955. The Australian Government's guide to the Copyright Act 1968 (Short Guide to Copyright, November 2016) [1] states on page 11 that "The term of copyright protection for photographs taken before 1955, regardless of whether the author has since died or is still alive, has expired".
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Captions
South Australian Railways L class locomotive no. 38 in tank configuration (Beyer, Peacock builder's photo, 1879)