Copy of a document entitled "Theory of New Low Noise Amplifier" by Higa, accompanied by a letter to Joan Bromberg, director of the Laser History Project commenting on the papers and briefly describing maser development work at Jet Propulsion Laboratory (JPL), from which Higa is retired. Also included is a document entitled "A History of Masers at the Jet Propulsion Laboratory," also by Higa, which describes work at JPL before and after the Sputnik satellite launch in 1957, including work for the National Aeronautics and Space Administration (NASA) on hydrogen masers. File also includes a curriculum vitae and a list of publications.