Abstract: This file contains a letter, dated 31 August 1950, from F L C Chauncey, His Majesty's Consul at Muscat, to the Political Residency in the Persian Gulf at Bahrain, enclosing a report entitled 'Notes on the Tribes of the Sultanate of Muscat and Oman' (ff 4-28). The report is in response to a letter from the Political Residency, No. 378/27/50G, dated 19 August 1950, regarding specific tribes and their relations with Saudi Arabia. These include: Al bu Shamis [Āl Bū Shāmis], Awamir [al-‘Awāmir], Janabah, Al Daru [al-Darū‘] and Bani Qitab [Banī Qitab]. The report contains details about these and other tribes. In addition, the final eight folios are comprised of a table of details of the tribes, such as district, principal settlements and villages, names of shaikhs, estimated population, estimated number of rifles and other remarks.Physical description: Foliation: the main foliation sequence (used for referencing) commences at the front cover and terminates at the back cover; these numbers are written in pencil, are circled, and are located in the top right corner of the recto side of each folio. An additional incomplete foliation sequence is also present in parallel between ff 3-28; these numbers are also written in pencil and ink, but are not circled, and are located in the same position as the main sequence.