Proposals-NASA, Apollo S-20, photography of the extreme ultraviolet and soft X-Ray (XUV) solar spectrum, 1964 August

Proposals-NASA, Apollo S-20, photography of the extreme ultraviolet and soft X-Ray (XUV) solar spectrum, 1964 August, - 04 02 GAN 1 Sub- 4 Box 4 Folder 85, Box: 4, Folder: 85. Gordon A. Newkirk, Jr. Papers, - 04-02-GAN. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/8176 Accessed December 10, 2025.