These are Maker of Modern Arabia (1928), Around the Coasts of Arabia (1930), and Arabian Peak and Desert (1931). This Arab Trilogy was considered by the publishers in the United States and Europe as best sellers at the time. The author wrote accounts of his travels to Arabia, in Arabic first, and were published under the titles of Muluk-ul Arab (Kings of the Arabs), Tareekh Najd Al-Hadeeth (History of Modern Najd), Qalb-ul Iraq (The Heart of Iraq) and other works on Arabia that were considered to be a remarkably critical and public success.