A long forgotten 1934 exhibition by the Australian expatriate J.W. Power at the Abstraction-Creation gallery in Paris provides the key to understanding this most elusive artist. Stephen and Donaldson argue that Power is Australia's most important avant-gardist of the early 20th century. J.W. Power Abstraction-Creation reveals how Power's work illuminates the relationships between Sydney and Paris, and between France and Australia, an exchange that goes to the heart of Australia's modernism.