Comets | Facts and Information on Visible Comets - Sky & Telescope
Rare, green comet to pass by Earth Wednesday - ABC News
The Comet Is Now Close But The Moon Is Bright: Why To Use Binoculars And Forget About Dark Skies
Sky and Telescope, vol. 22, no. 3 (September 1961) (Comet Wilson 1961d, Variable Star Spectroscopist, Stellar Radial Velocities, Filar Micrometer, Meteor Photography with a Light Amplifier): Margaret W. Mayall, Otto Struve, Norman