Abstract: This file consists primarily of letters between the Colonial Office and Edward Sinclair regarding Sinclair’s request for the address of the Bahrain Petroleum Company Limited in the Persian Gulf.Physical description: Foliation: the foliation sequence (used for referencing) commences at the front cover with 1, and terminates at the inside back cover with 7; these numbers are written in pencil, are circled, and are located in the top right corner of the recto side of each folio.