Keywords: Battye freycinet swanriver lg.jpg Swan River Chart The first detailed map of the Swan River was drawn by François-Antoine Boniface Heirisson of the Naturaliste from direct observation after his journey by longboat along the Swan River from 17-22 June 1801 Heirisson has included on the chart soundings along the entire length of his journey and comments on the singular topography of the mouth of the river the bar referring to features seen along its course http //www liswa wa gov au/treasures/freycinet/swanriver htm This image is a small section of the map at the Battye Library from about today's Mosman Park to Ascot The map seems to be somewhat out of scale but most major features in the river can be recognised on the map It is probable that upstream is up as the map is oriented on the screen and the Canning River entrance is midway along on the right hand side Heirisson Island s are marked as dots midriver further up 1901 François-Antoine Boniface Heirisson PD-Australia Maps of Swan River Western Australia Maps of parts of Western Australia Historical maps of Western Australia Baudin Expedition |