Easting value to be read first and the prefix letter B used. Maps held by the National Library are denoted in blue. Australian Survey Office. Detailed topographic map series, with block and section numbers shown on some sheets. Relief shown by contours and spot heights.
Preliminary editions are dyeline copies.
Series includes preliminary sheets plotted by National Capital Development Commission and Adastra Aerial Surveys. Dept. of the Interior. Australian Surveying and Land Information Group. Detailed topographic map series, withrelief shown by contours and spot heights. Preliminary editions are dyeline copies.