in 1953, he was commissioned by the state government of western australia to produce a plan for the metropolitan area of perth and fremantle. the resulting 1955 "plan for the metropolitan region" was co-authored with alistair hepburn and is commonly known as the 'stephenson-hepburn report'. it included an atlas of maps which laid down a broad pattern of future land uses including highways and open space, and catered for significant additional population growth.