Queensland State Archives posted a photo:
The town name Proserpine derives from the Proserpine River, whose name was derived from the legend of the Greek goddess Persephone (whose Latin name is Proserpine) It is sometimes nicknamed “ProsVegas” (although there are no casinos in the town) or abbreviated to “Prossy” by locals. Recently it is argued that the name was taken from one of the original cattle stations in the area.