Solar Dept. of Harvard College Observatory, scientific reports 50-52, 1957

Solar Dept. of Harvard College Observatory, scientific reports 50-52, 1957, - 04 02 GAN 1 Sub- 4 Box 4 Folder 111, Box: 4, Folder: 111. Gordon A. Newkirk, Jr. Papers, - 04-02-GAN. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/8202 Accessed January 17, 2026.