Use of blimps and balloons, 1975

Use of blimps and balloons, 1975, - 04 03 ATD 3 Sub- 4 Box 6 Folder 26, Box: 6, Folder: 26. Atmospheric Technology Division (ATD) Records, - 04-03-ATD. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/4951 Accessed April 18, 2026.