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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.