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The Director's Quarterly Report Second and Third Quarter 1957
Geomagnetic and 300mb level indices- Sept. 1956 to March 1957
Alternative method for calibrating K-coronameter
Distribution of flares of different importance over the solar disk
Variations in the height of ionospheric layers during magnetic storms
Evaluation of Climax coronal intensities
Photometry and polarimetry of the Earthshine with the coronagraph and photoelectric polarimeter
Some investigations of possible solar effects on polar outbreaks into the central USA
Upper level readjustments in long wave patterns
On sequential Es
Dishpan experiments and the internal motion in the Sun
The Director's Quarterly Report Third and Fourth Quarters 1958
The Director's Quarterly Report First and Second Quarters 1958
Contrasts in ideal one angstrom and one-half angstrom Ha filters
Emission lines from the dark side of Venus
The calculation of opacities for stellar interiors
A study of the morphology of ionospheric storms (revised abstract of the paper presented to the the USA URSI Spring Meeting- 1958. Read on the 25th of April)
Recent Climax spectrographs, 15 August 1955- 31 December 1957
Recurrent geomagnetic storms and solar prominences
Coronal emission intensity gradients

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