Emma S. Douglas (b. Stoner) (c. 1859-1952) was born in Perry, Illinois, and died in Oakland, California. She married Elliot W. Douglas, a merchant, in Illinois in 1883. They eventually resided in St. Louis, Missouri, and by 1944 Douglas had moved to Oakland. Douglas wrote to Mary Baker Eddy in 1887 to request a copy of Science and Health with Key to the Scriptures. Douglas's two daughters, Katherine D. Morrison (b. Douglas) and Margaret D. Mixer (b. Douglas) also became involved with Christian Science. In a testimony published in the Christian Science Sentinel Morrison related that her first healing through Christian Science treatment took place while living in Paris with her mother in the late 1910s, and Margaret and her husband, Knowlton Mixer, became members of the Christian Science church in Los Gatos, California.

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