Topographic map of Brisbane region, Queensland, showing classes of roads, railway lines with stations and tunnels, lighthouses, buildings, aerodromes, emergency landing grounds, seaplane bases and mooring areas. Relief shown by contours, gradient tints and spot heights. Depth shown by bathymetric isolines. Compilation: Compiled in 1953 by the Royal Australian Survey Corps, from ground surveys, air photographs and 1 mile maps. Control: Triangulation by the Royal Australian Survey Corps based on Sydney Observatory. Elevation: Elevations in feet. Standard Datum: Brisbane. Includes index to adjoining sheets, reliability diagram and grid referencing guide. AHQ/A1-3/0317