1951, September 2. The Inside and Outside of Our Sun. Forum No. 248. Participants: Francis J. Heyden, S.J., Director of Astronomical Observatory; William Markowitz, United States Navel Academy; Charlotte M. Sitterly, National Bureau of Standards. Moderator: Frank Blair. Liberty Broadcasting System. From the Raymond Reiss Studio.

1951, September 2. The Inside and Outside of Our Sun. Forum No. 248. Participants: Francis J. Heyden, S.J., Director of Astronomical Observatory; William Markowitz, United States Navel Academy; Charlotte M. Sitterly, National Bureau of Standards. Moderator: Frank Blair. Liberty Broadcasting System. From the Raymond Reiss Studio., Box: 1. Georgetown University Forum Transcripts, GTA-000107. Georgetown University Archives , Booth Family Center for Special Collections. https://findingaids.library.georgetown.edu/repositories/12/archival_objects/1352726 Accessed May 17, 2024.