These unprocessed collections include: Accelerator Operations records of the Main Control Center; Accelerator Research Division records of Richard Helm, Bob Siemann, Dennis Palmer, and Cherrill Spencer; Controls and Power Electronics (CPE) software engineering data tapes; Director's Office records of Janice Dabney; Electronics Department records of John Ashton; Klystron Group records; Mechanical Engineering and Magnetic Measurement Groups records; Next Linear Collider Test Accelerator (NLCTA) records of Peter Tenenbaum; Plant Engineering records; Power Conversion Department records on electrical/electronic systems; Site Engineering and Maintenance records of Burl Skaggs, Finn Halbo, and Brad Youngman; accelerator theory and special projects records; research area operations records.