functioning postal services at that time. Artistamp artist Bruce Grenville has created a set of stamps for the Sultanate of Upper Yafa. Many further stamps were issued, not by the official authority, even after the dissolution of the Federation and the establishment of the Republic of South Yemen. These stamps can be found in the Phillips CD Catalogue of Oman State, Dhufar and South Arabia (Volume 15) See also List of Sunni dynasties Lower Yafa Protectorate of South Arabia References External links Ba Wazir of the Hadhramaut British Protectorate of the Banu Afif Sultanate of Upper Yafa States in the Aden Protectorate Protectorate of South Arabia Former countries in the Middle East Former sultanates