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WikiPedia: Ethel de Keyser http://www.thetimes.co.uk/tto/opinion/obituaries/a... https://books.google.com/books?id=OlnyAwAAQBAJ&lpg... https://www.theguardian.com/news/2004/jul/20/guard... https://www.theguardian.com/world/2001/may/06/nels... https://www.independent.co.uk/news/obituaries/ethe...