Longreach
is where the head office used to be.
From the QANTAS website history section:
"In the words of McMaster, Winton was `the official birthplace of Qantas'. The first and only meeting of directors in the town was held on 10 February 1921. Qantas operations were then moved 160km south-east to Longreach, which was more central to the operational area.
Qantas' first office in Longreach was destroyed by fire. A temporary office was provided free in stock and station agent Frank Cory's plank-fronted store. Qantas later occupied the nearby Graziers Building until moving its headquarters to Brisbane in 1929. "