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In the novel Elephants Can Remember, Miss Sedgwick is a former secretary to Ariadne Oliver. Mrs Oliver misses her very much.

Mrs Oliver likens Miss Sedgwick to the Victorian book Enquire Within Upon Everything. This is because Miss Sedgwick knew so many things, such as the places where Mrs Oliver sometimes put things, and the kind of places in which Mrs Oliver kept things. Miss Sedgwick also remembered the names of people to whom Mrs Oliver had written nice letters, and those to whom Mrs Oliver had written "rather rude things".

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