Mary Knox (1859-1910) was born and died in Springfield, Massachusetts. She was the daughter of Samuel Knox, a well known politician and abolitionist who had represented Missouri's 1st District in the United States House of Representatives from 1864 to 1865. She was a philanthropist and an avid collector of Japanese art. In 1886 she wrote to Mary Baker Eddy to order several of her published pamphlets on Christian Science.

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