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![["Blind approach by voice," 1939 August]](/img/placeholder.gif?1791407027 "["Blind approach by voice," 1939 August]")
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Lear Developments, ["Blind approach by voice," 1939 August], [2000-06-20_container_009]. Museum of Flight Digital Collections, accessed 16/10/2026, https://digitalcollections.museumofflight.org/nodes/view/4781