Astronomy

The Moon: A Popular Treatise

The World of Flying Saucers: A Scientific Examination of a Major Myth of the Space Age

Comet Lore

The Star

Harmonies of the World

Yearbook of Astronomy 2024

Astroquizzical

A Preliminary Dissertation on the Mechanisms of the Heavens

Living the Lunar Calendar

The Cycle of the Zodiac Signs

Cosmos

The Theory of Relativity and Its Influence on Scientific Thought

How does the Universe work

Pioneer Saturn Encounter

The uses of astronomy

In the Shadow of the Moon

Moon

The Evolution of Worlds

Astronomical Myths

Astronomy for Teenagers