Roy J. Plunkett (1910-1994) was the discoverer of Teflon, while working as a chemist at the DuPont Company. Plunkett's laboratory notebook documents the discovery of Teflon at DuPont's Jackson Laboratory in 1938. The notebook documents the experiments that led to the effective control of the rapid and explosive polymerization of tetrafluoroethylene gas into a solid polymer.