Proposals-NASA, An Extreme ultraviolet and soft X-ray spectroheliograph for OSO-H, 1966 June

Proposals-NASA, An Extreme ultraviolet and soft X-ray spectroheliograph for OSO-H, 1966 June, - 04 02 GAN 1 Sub- 4 Box 4 Folder 82, Box: 4, Folder: 82. Gordon A. Newkirk, Jr. Papers, - 04-02-GAN. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/8173 Accessed December 10, 2025.