JS1058: Proposal for Flight Testing of 107-II Helicopter to Substantiate Gross Weight Increase to 20,000 LB, 1980-03-20 - 1980-11-10, Box: 3 , Folder: 4. Shannon Engineering, Inc., records, 8746. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/766574 Accessed June 14, 2026.