Astronomy

UFOs Over Colorado

Thunder and Lightning

Auroræ: Their Characters and Spectra

The Destinies of the Stars

The Destinies of the Stars

The Telescope in the Ice

The Star Book: Stargazing throughout the seasons in the Northern Hemisphere

The Star Book

Meteoric astronomy: A treatise on shooting-stars, fire-balls, and aerolites

The Heavens Above: A Popular Handbook of Astronomy

Half-hours with the Telescope

Weird Universe

Civilizations and the Unfolding Story of Earth

Aspiring Astronomer Guide

Earth Enduring Legacy

Celestial Forge Awakens

Mars Humanity Next Dawn

The Illustrated Guide to Understanding Astrophysics and the Universe

Lectures on Stellar Statistics

Mars and Its Canals