The states in mainland Australia adopted differing railway gauges with only New South Wales, initially, using standard gauge, with Queensland, Western Australia, & parts of South Australia using 3ft 6in. Victoria & the rest of South Australia used 5ft 3in but in later years standard gauge spread more widely with the completion of the Indian Pacific route & then that from Adelaide to Darwtn.
Due to the limited material available, pictures in Queensland will be added to the New South Wales gallery and those on the Daewin line to South Australia.