"Inferences from radio signals from the sun and planets", Proceedings of the National Academy of Sciences, 1957 January

"Inferences from radio signals from the sun and planets", Proceedings of the National Academy of Sciences, 1957 January, - 06 JWF 3 Sub- 1 Box 9 Folder 32, Box: 9, Folder: 32. John W. Firor Papers, - 06-JWF. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/9101 Accessed December 27, 2025.