4. Sketch of Doha and the proposed site of Decca station Contributor: Bahrain Political Agency (creator)Political Agent, Bahrain (creator) Date: 1948/1950 Language: English Extent: 1 map sheet
10. Sketch map indicating the Petroleum Concessions Limited concession boundary and the route taken by an Arabian-American Oil Company survey party Date: 1949/1949 Language: English Extent: 1 sketch map
12. ‘Sketch illustrating S.E. frontier of Saudi Arabia’ Date: 1948/1948 Language: English Extent: 1 facsimile sketch map