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In page Margery Allingham:

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With a strong central character and a format to work in, she began to produce a series of Campion novels. At first she also continued writing short stories and articles for magazines such as The Strand Magazine, but as her Campion saga went on her sales grew steadily. Campion proved so successful that Allingham made him the centrepiece of another 17 novels and more than 20 short stories, continuing into the 1960s.[citation needed]