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*[http://www.archive.org/stream/frontieroverseas06indi#page/260/mode/2up/ "Aden"], page 260 ''Frontier and Overseas Expeditions from India Volume VI Expeditions Overseas'' by Intelligence Branch, Army Headquarters India 1911 Archive.org

*''The Empire at War'' edited for the Royal Colonial Institute by Sir Charles Lucas, in five volumes, with a [http://catalogue.nla.gov.au/Record/1003532 catalogue contents description]. ([http://access.bl.uk/item/viewer/ark:/81055/vdc_100022549242.0x000002#?c=0&m=0&s=0&cv=0&z=-1107.9974%2C-93.2973%2C3908.9948%2C2833.5945 Volume 1] British Library Digital file) Volume 5, 1926, covers WW1 The Mediterranean colonies ; Egypt and Palestine ; Aden ; India ; Ceylon ; Malaya ; China. [http://access.bl.uk/item/viewer/ark:/81055/vdc_100022554216.0x000002#?c=0&m=0&s=0&cv=3&z=-47.2741%2C0%2C3640.5482%2C2639 Volume 5], British Library Digital file, [http://access.bl.uk/item/viewer/ark:/81055/vdc_100022554216.0x000002#?c=0&m=0&s=0&cv=7&z=-47.2741%2C0%2C3640.5482%2C2639 Contents]. Also available as a pdf download from the Digital Library of India [http://www.new.dli.ernet.in/handle/2015/284274 Vol-vth], [https://archive.org/details/in.ernet.dli.2015.284274 Archive.org version].

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