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Correspondence, Mary L. Andrews to M. A. Farrell
Correspondence, M. A. Farrell to Walter Orr Roberts
First meeting of the incorporators
Correspondence, Henry G. Houghton to Horace R. Byers, G. L. Lee, Jr., and A. W. Peterson
Certificate of Incorportation
By-Laws
The Director's Report
The Director's Report
Relation between K-coronal intensity maxima and geomagnetic disturbance
A model of the electron corona with reference to radio observations
Prominances in solar magnetic fields
Flare of 13 December 1957
Solar flare classification
The ionization cross-section of FE XIV in the solar corona by electron collision and its relationship to the temperature of the corona
The relationship of geomagnetic activity to 300mb circulation changes during the winter of 1957-58
List of M-region geomagnetic storms
Electron puff
Resolution adopted by the Governors' Conference
Coronal emission intensity gradients
Recurrent geomagnetic storms and solar prominences

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