1960-08-08: Celestial Fireworks
1960-07-11: Other Moons of Saturn and Jupiter
1960-06-08: Star Clouds of Sagittarius
1960-05-11: Uranus
1960-01-20: The Great Spiral
1959-12-14: What was the Star of Bethlehem
1959-11-16: Pairs of Suns
1959-10-26: The Front and Back of the Moon
1959-06-10: Minor Planets
1958-09-17: Life On Other Planets