Contents of the Collection The Seattle Air Route Traffic Control Center Collection is comprised of textual, photographic, and audiovisual materials that relate to the operations of the Seattle Air Route Traffic Control Center (ARTCC). Materials are dated from 1959 to 1986 with bulk dates in the 1980s. The collection mostly focuses on training materials, including technical diagrams and drawings of the "Dysim," a simulator used for controller training; diagrams of the Federal Aviation Administration (FAA)...