Abstract: This file contains correspondence between Stuart George Knox and David Lockhart Robertson Lorimer, British Political Agents at Bahrain, and Percy Zachariah Cox and Richard Lockington Birdwood of the British Political Residency in the Persian Gulf at Bushire, as well as with Sheikh ‘Īsā bin ‘Alī Āl Khalīfah, ruler of Bahrain. In addition, included within the file are office notes of various conversations between the Political Agent with the ruler of Bahrain and Seth Rao Sahib Tirathdas Maharaj, Director of Customs at Bahrain.The correspondence and notes concern Turkish customs regulations at the Eastern Arabian ports of al-Qaṭīf and al-‘Uqayr pertaining to the landing and levying of duty on Bahraini and non-Bahraini goods, and the system of issuing cargo certificates. Included in this file are two examples of stamped cargo certificates in Arabic (f. 6 and f. 7).Physical description: Foliation: Foliation starts on file cover and terminates on the final folio before the back cover. Foliation is in pencil in circled numbers in top right of recto.