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Esther Arvilla Hopkins (née Harrison; September 18, 1926 – May 19, 2021) was an American chemist and environmental attorney. Hopkins was best known for her career as a biophysicist and research chemist at American Cyanamid along with research in the Polaroid Corp Emulsion Coating and Analysis Laboratory. She also pursued a career working as an attorney with the Massachusetts Department of Environmental Protection (DEP) following her time as a chemist.