Incoming Resources
- Geomagnetism and the emission-line corona, 1950-1953, by Barbara Bell and Harold Glazer
- Observations of the solar electron corona, February 1964-January 1968, by Richard T. Hansen; prepared by Research Laboratories, ESSA
- Synoptic observations of the solar corona during Carrington rotations 1580-1596 (11 October 1971-15 January 1973), by R.A. Howard [and eleven others]
- Notes on the solar corona and the terrestrial ionosphere, by Sydney Chapman with a supplementary note by Harold Zirin
- Solar observations during Skylab, April 1973-February 1974, by J.M. Hanson, E.C. Roelof and R.E. Gold
- Synoptic observations of the solar corona during Carrington rotations 1580-1596 (11 October 1971-15 January 1973) [Reissue with quality reproductions of images], by R.A. Howard [and eleven others]
- Catalogue of coronal holes 1970-1991, by A. Sanchez-Ibarra and M. Barraza-Paredes