Changes

*[https://archive.org/stream/in.ernet.dli.2015.284658/2015.284658.United-Service#page/n103/mode/2up "Aden, One Hundred Years of British Rule"] by Captain F D I Wood, R A, page 94 ''Journal of the United Service Institution of India, Volume 69, 1939''. Archive.org

*[https://archive.org/details/colonial-report-aden-1946 ''Colonial Office Annual Report on Aden and Aden Protectorate 1946''] HMSO 1948. The first volume in a new series of Colonial Office Annual Reports. Includes the war years. Archive.org

:[https://archive.org/details/colonial-report-aden-1948/page/n1/mode/2up ''Colonial Office Annual Report on Aden 1948''] HMSO 1950. Archive.org

*[https://digital.library.lse.ac.uk/objects/lse:ses812bix ''Aden, The Protectorates and the Yemen''] by Reginald Sorensen ''Fabian Tract 332'' July 1961. digital.library.lse.ac.uk