The plaque located at 84 to 88 Margaret Street (Park Motor Inn) reads:
"On this site stood the Austral Hall which was reported capable of accommodating 500 stage performers and an audience of 5,000.
"Toowoomba’s Austral Society was founded by George Essex Evans in 1903 for the promotion and advancement of music, literature, art and science. The Society bought the site of the former gaol (1864–1904) and Architect William Hodgen designed the building using three remaining outer walls. The roof was supported by cast iron columns made by the Toowoomba Foundry.
The bulk of the roofing iron was sold and used to fence the (old) Toowoomba Showgrounds.
A town rock was directed on the open space and over the remaining western part of the wall basalt foundations after an archaeological dig was conducted by Dr Bryce Baker of The University of Southern Queensland in 1997.
- "Plaques mark historic Toowoomba sites". Toowoomba City Council. n.d. Retrieved 6 May 2008.
- Talbot, Don (August 2006) . Ghostly Tales of Toowoomba. ISBN 978-0-9580584-3-8.
- Munt, Von (15 August 1980). "A Toowoomba Hall that held 8000". Toowoomba Chronicle (Toowoomba: Toowoomba Chronicle).
- Johnston, Bill (2006). George Essex Evans, Patriotic poet of Australia – Volume 1 – His Life and Family. Maleny. p. 110.
- Bradley Knewstubb (13 December 1998). "List of Queensland Cinema". Bradley Knewstubb. Retrieved 17 October 2008.