Queensland State Archives posted a photo:
From the Queensland Heritage Register.
Associated with signalling and safeworking in the Toowoomba yard is the A signal cabin, taken out of use mid 1993. This cabin possibly dates from the 1920’s. The cabin interior is still intact, and includes signal levers, safeworking instruments and Toowoomba yard diagram. Associated with this structure are the now dismantled semaphore signals from the signal gantry.
Queensland State Archives, Digital Image ID 27063