Attributions The files and metadata on this page have been mirrored with permission from The Telecom Archive. Northern Electric / Northern Telecom Card Catalog Category Tables Index Tables Cards 2 QTA4A QTA5A QTA6A QTA7A QTA8A QTA9A Card 11967-11-01 QTA4A QTA5A QTA6A QTA7A QTA8A QTA9A Card 21967-11-01
