His previous pacifism turned to pessimism when France occupied the Ruhr in 1923 and he abandoned his interest in international law, focusing instead on economics.
[1] In 1925, Carlton J. H. Hayes employed him to study the contemporary French economy with William Ogburn; the fruits of their labours were published as The Economic Development of Post-War France in 1929.
In 1970,[2] he was appointed Professor of Economics at York University in Toronto, a chair which he held for the rest of his life.
His three-volume Correspondence of Léon Walras and Related Papers was published in 1965; it contained 1,900 letters written in four languages over a fifty-year period.
[8] He had married twice; firstly to Grace Mary Spurway in 1922 but the union (which produced three children) ended in divorce; and secondly in 1948 to Olive Caroline Weaver.