Cosmology

The Warlord of Mars

The Story of the Heavens

Flowers of the Sky

Astronomy for Amateurs

Recreations in Astronomy

Modern cosmogonies

Letters on Astronomy in which the Elements of the Science are Familiarly Explained in Connection with Biographical Sketches of the Most Eminent Astronomers

The Evolution of Worlds

Look to the Stars

Worlds in the making: The evolution of the universe

Comet Lore

The Ways of the Planets