Research notes 3 Folder of handwritten notes and a spiral-bound notebook (marked Trucial Oman, ca.1970) containing notes on pearling and other topics. Many of these are written on Petroleum Development (Trucial Coast) Limited notepaper. There are notes in Arabic on different pearling terms, extracts from Charles Belgrave's 'Personal Column' (1960) on pearling, as well as a range of historical, geographical and archaeological notes - including some sketches and maps - in the small notebook. From a box marked 'Al-falaj/Izki notes, very important' 1970