Eliza A. Clark (1846-1909) was born in Worcester, Massachusetts, and died in Springfield, Massachusetts. She was a student of Mary Baker Eddy's, studying with her in November 1883 alongside her brother, William T. Seaver. She joined the Christian Scientist Association in March 1887 and in June 1894 joined The First Church of Christ, Scientist, in Boston, Massachusetts. She was also a Christian Science practitioner, listed in The Christian Science Journal in Holyoke, Massachusetts, from 1891 to 1893, and in Springfield, from 1894 to 1906.

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