JS1392: Company Flight Test Results of Quiet 707-300B (ADV)/C Equipped with Boeing Spare Engine Pod, 1989-09-27, Box: 15, Folder: 31. Shannon Engineering, Inc., records, 8746. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/766923 Accessed June 16, 2026.