25. File 3414/1906 Pt 1 'Persia: telegraphs; Seistan telegraph lines; Meshed-Seistan; Meshed-Tehran; Robat-Seistan; Nasratabad-Koh i Malik Siah; proposed exchange of telegraphs with Russia' Date: 1905/1916 Language: English Geographic region: MeshedSeistanKhaf
26. File 3414/1906 Pt 2 'Persia: telegraphs; exchange of telegraphs with Russia' Date: 1907/1908 Language: English Geographic region: MeshedSeistanKhaf
27. File 3414/1906 Pt 3 'Persia: telegraphs; exchange of telegraphs with Russia and Anglo-Persian convention for improvement of Arabistan telegraphs' Date: 1908/1911 Language: English Geographic region: ArabistanMohammerah
28. File 3414/1906 Pt 4 'Persia: Arabistan telegraphs; Mohammerah-Ahwaz-Borasjun line' Date: 1905/1910 Language: English Geographic region: MohammerahAhwazBorasjun
29. File 3414/1906 Pt 5 'Telegraphs:- N. Persia. Tehran-Khanikan line; Tehran-Shahrud line; I. E. Tel. Dept's undertakings in N. Persia' Date: 1906/1911 Language: English Geographic region: KhanikinTehranShahrud
30. File 80/1913 Pt 2 'Persia: Telegraphs' Date: 1919/1924 Language: English Geographic region: MeshedSeistan
32. File 1323/1916 Pt 2 ‘Baluchistan:- Perso-Baluch Frontier. Sale of the Mirjawa-Kwash Telegraph Line.’ Date: 1924/1924 Language: English
33. File 4535/1928 Pt 1 ‘Persian Gulf negotiations 1928. Revision of Foreign Office Memorandum of 1908 for C.I.D. Persian Gulf Sub-Committee.’ Date: 1928/1929 Language: English
34. File 4535/1928 Pt 7 ‘Persia: Telegraphs: Position of I.E.T. Dept:’ Date: 1929/1929 Language: English Geographic region: Persia
35. File 5646/1918 'Persia and Mesopotamia: future telegraphic arrangements' Date: 1916/1920 Language: English Geographic region: MesopotamiaPersia
36. File 80/1913 Pt 1 'Arabistan: telegraph line' Date: 1912/1919 Language: English Geographic region: Bander RigBorasjun