13. 'File 12/C(2) Najd Mission: operation of blockade' Date: 1918/1918 Language: English Geographic region: HijazNajdHailRiyadh
15. 'File 8/C Philby's Mission to Ibn Sa`ud; Friction between Najd and Kuwait because of British Blockade of Land Trade' Date: 1918/1918 Language: English Geographic region: NajdRiyadhHailHijaz
16. 'Lower Mesopotamia between Baghdad and the Persian Gulf' Date: 1916/1916 Language: English Geographic region: PersiaPersian GulfNejd
17. 'Report on the operations carried out in the southern desert in connection with the Iraq-Najd borders, November 1927-May 1928.' Date: 1928/1928 Language: English Geographic region: NajdIraq
18. ‘Report on the administration of the Persian Gulf Political Residency and Muskat Political Agency for the year 1879-80’ Date: 1880/1880 Language: English Geographic region: Persian GulfMuscatFarsNejd
19. 'Report on the operations carried out in the southern desert in connection with the Iraq-Najd borders, June 1928-May 1929.' Creator: Author: Air Ministry Date: 1930/1930 Language: English Geographic region: IraqNajdBasraHail
21. ‘Sketch Map of Kuwait and Neighbouring Country’ Date: 1928/1928 Language: English Geographic region: NajdKuwaitPersia
22. 'Persian Gulf Gazetteer. Part I. Historical and Political Materials. Précis of Nejd Affairs, 1804-1904' Creator: Author: Jerome Anthony Saldanha Date: 1904/1904 Language: English Geographic region: NajdArabian Peninsula
23. 'Gazetteer of the Persian Gulf. Vol I. Historical. Part IA & IB. J G Lorimer. 1915' Creator: Author: John Gordon LorimerAuthor: Richard Lockington Birdwood Date: 1915/1915 Language: English Geographic region: الخليج العربيشبه الجزيرة العربيةالبحرينعُماننجدعُمان المُتصالحةالعراق التركيةالكويت
24. ‘Wybard Lieutenant Travels in Nedjd in Arabia’ Date: 1832/1834 Language: English Geographic region: BussoraArabian PeninsulaElreasa