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Horrocks, S.  (2019, May 09). Lyon, Hilda Margaret (1896–1946), aeronautical engineer. Oxford Dictionary of National Biography. Retrieved 27 Jan. 2021, from https://www.oxforddnb.com/view/10.1093/odnb/9780198614128.001.0001/odnb-9780198614128-e-111777.

Horrocks, Sally M. "Lyon, Hilda Margaret (1896–1946), aeronautical engineer." Oxford Dictionary of National Biography.  May 09, 2019. Oxford University Press. Date of access 27 Jan. 2021, <https://www.oxforddnb.com/view/10.1093/odnb/9780198614128.001.0001/odnb-9780198614128-e-111777>

Horrocks, Sally M. "Lyon, Hilda Margaret (1896–1946), aeronautical engineer." Oxford Dictionary of National Biography. 9 May. 2019; Accessed 27 Jan. 2021. https://www.oxforddnb.com/view/10.1093/odnb/9780198614128.001.0001/odnb-9780198614128-e-111777.