"The early history of the Yemeni port of al-Hudaydah" Arabian Studies VII: 37-51. "The English East India Company's settlement at al-Mukha, 1719-1739", The Arab Gulf, Vol 13, No 2: 13-38. "The Yamani Island of Kamaran during the Napoleonic wars", Middle Eastern Studies, Vol 16, no 3: 246-266. "Foreign interventions and occupations of Kamaran Island", Arabian Studies, IV: 89-111. "Al-Yaman and the Turkish occupation, 1849-1914," Arabica, 23, 2: 156-196. "Imam Yahya and the Yamani uprising of 1904-1907", Abr Nahrain, Vol XVIII: 33-73. "The Turkish-Italian war in the Yemen, 1911-12", Arabian Studies, III: 51-65. "Arrest of the British vice-consul in al-Hudaydah," Studies in Islam, 19: 77-91. "British naval operations against Turkish Yaman, 1914-1919", Arabica, XXV, 2: 148-197. "The commercial activity of Hudaydah, Yaman, in 1897", American Journal of Arabic Research, Vol IV: 1-14 "The Ottoman quarantine station on Kamaran Island, 1882-1914", Studies in the History of Medicine, Vol. II, 1-2: 3-137. "Railway projects in Yemen, 1905-1921", The Arab Gulf, Vol 14, No 1: 33-40. "The Powers and mineral concessions in the Idrisi Imamate of Asir, 1910-1929", Arabian Studies, II: 76-107. "The detention in Bajil of the Jacob mission to the Imam of Yemen in 1919" Studies in Islam, 18: 204-239. "The British military administration of al-Hudaydah, Yemen, Dec 1918-Jan 1921", Zeitschrift der Deutschen Morgenlandischen Gesellschaft, 135, 1-2: 241-287. "Anglo-Italian rivalry in Yemen and Asir, 1900-1934", Die Welt des Islams, XVII, 1-4: 156-193. "The French claim to ∞ayh [Shaykh] Sa'id (Yaman) and its international repercussions, 1868-1939", Zeitschrift der Deutschen Morgenlandischen Gesellschaft, 133, 1: 93-133. "Soviet relations with Saudi Arabia and the Yemen, 1917-1938", Middle Eastern Studies, Vol 20, No 1: 53-80. "The struggle for the Red Sea: Mussolini's policy in Yaman, 1934-1943", Asian and African Studies, XVI: 53-89. "Al-Hudaydah and the powers during the Saudi-Yamani war of 1934", Arabian Studies VI: 7 34.