SMITHSONIAN INSTITUTION / SCIENCE PHOTO LIBRARY SMITHSONIAN INSTITUTION / SCIENCE PHOTO LIBRARY
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Mary Elizabeth Bennett Ritter (1860-1949), US physician. Ritter was the wife of biologist William Emerson Ritter (1856-1944), one of the founders of Science Service. Science Service was an organisation dedicated to informing the public of the latest scientific discoveries and achievements. Mary Ritter was an advocate for women's rights and public health issues. This photograph by Martin J. Cooney was published in the Berkeley Daily Gazette on her 87th birthday (7 June) in 1947.
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