Katie McNiel (?-?) was a domestic servant who served in Mary Baker Eddy's household from 1883-1888. During those years, McNiel worked at three of Eddy's Boston homes: 569 Columbus Avenue, 571 Columbus Avenue, and 385 Commonwealth Avenue. She was paid $5 a week, and for most of the time she worked in the house, she was assisted by another domestic servant named Maggie.

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