During his time with the IPC the company produced the magazines Iraq Petroleum and The Crescent, and Roux was commissioned to produce articles.
Through the duration of 1956-1960, Roux published a series of articles, The Story of Ancient Iraq.
They form the basis of his later books.After the 14 July Revolution of Iraq in 1958, Roux returned to Europe and headed the International medical department at GlaxoWellcome, retiring in 1980.
In 1964, he published in English Ancient Iraq, a book covering the political, cultural, and socioeconomic history of Mesopotamia.