he was elected to the National Academy of Engineering. In 1982 he received the Gold Medal of the Radiological Society of North America in recognition of the development of the X-ray image amplifier.
Dr. Coltman is survived by his wife Charlotte of Strongsville, Ohio; their daughters, Sally Condit, also of Strongsville, and Nancy Horner of Severn, Maryland; four grandchildren; and four great-grandchildren.
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Memorial Tributes Volume 16 . Washington, DC: The National Academies Press,
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