Dr. Thomas W. Evans, D.D.S.
Engraving of a portrait of famous American dentist Thomas W. Evans (born 1823 and died 1897) who performed dental procedures on many heads of state around the world and popularized dental techniques such as the use of amalgam fillings and nitrous oxide as an anesthetic.
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“Dr. Thomas W. Evans, D.D.S.,” Digital Collections - University at Buffalo Libraries, accessed December 8, 2019, https://digital.lib.buffalo.edu/items/show/90380.