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First half of our interview with mechanical engineer and tech pioneer Nancy Fitzroy. Nancy has received many awards for her work in the later 20th century from the IEEE, ASME and other groups. This is part of our oral history series called "Edison Presents". This segment is a half hour and includes the pre-1950s technology Nancy and her husband worked on. They worked on World War II technology and adapting it for the space race. Missile and rocket engines were an achievement in mechanical and chemical engineering.