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==External links==

*[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.