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'''Dera Ismail Khan''' was the capital of [[Dera Ismail Khan District]] in the [[North West Frontier Province]] during the British period, North West Frontier Province having been created out of Punjab in 1901. In the 1920s it was always referred to as D.I.K. <ref>[http://jramc.bmj.com/content/49/2/143.full.pdf "Notes on a Tour Through Waziristan"] by Major A. D. Stirling ''Journal of the Royal Army Medical Corps'' 1927;49:2 pages 143-151. </ref>