I want to get information on 1920s Australian economy?

Im doing an assignment on the economy , more precisely the overseas demand, is there anyway i can get information about this of the web? Ive been trying to find for ages! Cant find anything.|||Wiki http://en.wikipedia.org/wiki/Economic_hi鈥?/a> gives you the greater picture. Google what you read there (terms) to get sources you can use for work.