Gordon M. Kline (1903-1996) was highly involved in the plastics industry, beginning in its infancy. He worked in the plastics section of the National Bureau of Standards, editor of Modern Plastics, and with the U.S. government on preservation of significant historical items. The papers document his professional career with the National Bureau of Standards, along with material describing his work with the Society of the Plastics Industry, the American Society for Testing Materials, and the International Standards Organization.