A miscellaneous set of papers of Dr J.S. Hey comprised of articles by various authors, notes on published papers, lecture notes and other items.

1. Four printed articles by various authors on cosmic rays, 1 folder.

2. Two printed articles and notes on frequencies for radio astronomy, 1 folder.

3. Two pages of manuscript notes on interference, 1 folder.

4. A folder labelled 'Microlock and Minitrack' containing the articles 'Astronomical ballooning: the Stratoscope programme', 'Radio Astronomy Observations from Space' and 'Satellite Periods and Velocities', and notes on the U.S.-U.S.S.R. Symposium on Radio Astronomy (1963).

5. A folder labelled 'Plasma clouds. Artificial heating of ionosphere' containing notes on published works, copies of articles and general notes.

6. A folder labelled 'Q switched lasers. Laser studies of the atmosphere' containing articles on 'Detection of Scattering Layers in the Upper Atmosphere (60-140 km) by Optical Radar', 'Laser scatter measurements in the mesosphere and above', 'Optical radar performance in atmospheric scattering', 'Light scattering from a laser beam at heights about 40 km' and 'Q-switched Lasers'.

7. Papers concerning aerials, 1 folder, including the article 'Phase Centers of Microwave Antennas', notes from 'Proceedings of the I.R.E.', notes on aerials, a draft of 'The Correlation of the Noise Signal from a Radio Source Received on Two Aerials with Application to the Large Aerial Interferometer', and the paper 'Path-Length Equalization for a Radio Interferometer'.

8. Four graphs, 1 folder: 'Graph for Conversion of Feet to Metres', 'Relation between Effective Area of a Paraboloid, taken as 5/8 area of aperture, and actual diameter D', 'Uniformly Illuminated Aperture: Calculation by wave theory' and a graph depicting beam widths.

9. T.P. McLean, 'Physics and Electronic Department Lectures. Quantum Electronics. Lecture 1 - Basic Theory', 12 pages.

10. Remarks on Landovitz and Marshall, 'Stimulated Electron Spin Flip Transitions as the Source of the 18 Mc. Radiation on Jupiter', from 'Nature', 22 September 1962, p. 1186, 3 pages.

11. Notes on printed articles and papers regarding solar activity, 1 folder.

12. Miscellaneous printed articles and papers, 1 folder:

'The Solar Radiation - Present and Past'

'Observations of Ionization induced by Artificial Earth Satellites'

'Evidence of Satellite-Induced Ionization Effects Between Hemispheres'

'The Relation of the Satellite Ionization Phenomenon to the Radiation Belts'

'Impulsive Radio Signals from the Planet Venus'

'Radio Observations of the Planet Venus at a Wave-length of 11m'

'Class II Radio Signals from Venus at a Wave-length of 11 Metres'

'Radio Frequency Radiation from Cygnus Y'

'The Helicone - A Circularly Polarized Antenna with Low Sidelobe Level'

'Time Sharing Radiometers'

'On the Distribution of Spectral Indices and Flux Density of Radio Sources'

'The Satellite Ionization Phenomenon'

'The Radio Position of the Galactic Nucleus'

'Ohio State University Radio Observatory'

'The Effect of the Source Distribution on Antenna Patterns'

'Planetary and Solar Radio Emission at 11 Metres Wavelength'

'Radio Telescope Antenna of Large Aperture'

'Solar Radiation at 19.0 Gc/s during the Eclipse of May 20, 1966'

'A Radio Map of the Sky at 1.2 Metres'