Changes

*[http://www.iranica.com/articles/indo-european-telegraph-department Indo-European Telegraph Department in Iran] Encyclopaedia Iranica. While the IETD was an autonomous department for much of its existence, between February 1888 and April 1893, it was under direct auspices of the Director General of Indian Telegraphs. The IETD was dissolved in March 1931. There was significant intermarriage with Iranian Armenians.

**[https://web.archive.org/web/20070626152039/http://www.sis.org.uk/bulletin/92/Packer.pdf "Scientific Instrument with a Story to Tell"] by John Packer ''Bulletin of the Scientific Instruments Society'' No. 92 (2007), pages 17-18. now an archived webpage.

*"The Raj Reconsidered: British India’s Informal Empire and Spheres of Influence in Asia and Africa" by James Onley ''Asian Affairs Volume XL, no. I'', March 2009 [http://socialsciences.exeter.ac.uk/iais/downloads/Onley_Raj_Reconsidered.pdf original pdf]

*[https://ryderarchives.weebly.com/turco-persian-boundary.html "Turco-Persian Boundary Commission 1913-1914"] Charles Ryder of the Survey of India was appointed as the senior surveyor for the British working with the Commissioner and his Deputy alongside Russian colleagues and with representatives of the Turkish and Persian governments. He later became the Surveyor-General of India. Ryder Archives.

*[http://omangbnews.com/news/2016/01/24/former-british-ambassador-to-oman-discusses-oman-during-world-war-one "Former British Ambassador to Oman discusses Oman during World War One"] 24th January 2016 Oman GBnews. In 1913 a detachment of British Indian troops was for the first time deployed to Muscat. The 1920s were to be a decade in which British India became progressively more directly involved in Omani affairs.

*[http://www.iranicaonline.org/articles/great-britain-vii Bibliography of books by British Travelers To Persia] iranicaonline.org

===Maps===

*[http://www.qdl.qa/en/archive/81055/vdc_100022744604.0x0000b6 1928 Map of Persia and Afghanistan] Qatar Digital Library

*Also see below ''Gazetteer'' by Lorimer

*[http://www.qdl.qa/en/archive/81055/vdc_100037450601.0x000002 ''Thim Days Is Gone'']. British Library Mss Eur F226/28 Qatar Digital Library. A memoir written c 1980 by Major Maurice Patrick O'Connor Tandy recounting his career, initially in the Royal Artillery in a Light Battery, and an Indian Mountain Battery in the 1930s. He then joined the Foreign and Political Department in October 1936, (page 33) and his later postings included the Persian Gulf and Kuwait. Further details are in [http://blogs.bl.uk/untoldlives/2017/02/thim-days-is-gone-a-colonial-memoir.html Thim Days Is Gone – a colonial memoir] 16 February 2017 Untold lives blog, British Library.

*[http://pahar.in/wpfb-file/1944-over-khyber-to-the-caspian-sea-by-ahlsand-s-pdf/ ''Over Khyber to the Caspian Sea''] by Ruth Ahlsand 1944. Published by Thackers Bombay. Link to a pdf download PAHAR Mountains of Central Asia Digital Dataset. The Norwegian authoress and her husband followed the trail of the Peacock Throne, which was looted from Delhi and taken to Teheran in 1739. It is thus a different kind of travel book, tracing the path and the history of this Throne and touching on characters and events. <ref>[https://trove.nla.gov.au/newspaper/article/59477978 Book review ''Sunday Times'' (Perth, WA : Sun 22 Jun 1947] trove.nla.gov.au</ref>

*[https://archive.org/details/thearabianfrontierofthebritishrajmerchantsrulersandthebritishinthenineteenthcenturygulf/mode/2up ''The Arabian Frontier Of The British Raj: Merchants, Rulers, And The British In The Nineteenth Century Gulf''] by James Onley 2007. Archive.org.

:Article [https://socialsciences.exeter.ac.uk/iais/downloads/Onley_Raj_Reconsidered.pdf "The Raj Reconsidered: British India’s Informal Empire and Spheres of Influence in Asia and Africa"] by James Onley. ''Asian Affairs, vol. XL, no. I, March 2009'' socialsciences.exeter.ac.uk.