Queensland State Archives posted a photo:
From the Queensland Heritage Register.
Gladstone Court House (former), a two-storeyed masonry building, was erected in 1940-42. The building was designed in the office of the Queensland Department of Public Works, and replaced an 1873-74 court house and lands office. The 1940s building was at least the third purpose-designed court house in Gladstone.
Gladstone was established by the New South Wales government in 1853-54, possibly in an attempt to create a more centralised alternative to Brisbane as the capital of any future northern colony. When Captain Maurice O’Connell, first Government Resident and Police Magistrate of the Port Curtis district, arrived in March 1854, the township of Gladstone had been laid out near Auckland Inlet, and the first slab buildings had been erected. O’Connell and his family set up residence [initially in tents] at Barney Point, a couple of miles south of Auckland Inlet, and around the residency