Cosmology

The Story of the Heavens

The Ways of the Planets

Modern cosmogonies

The Plurality of Worlds

Photographs of Nebulæ and Clusters, Made with the Crossley Reflector

Peirce's Cosmology

The Dominion Astrophysical Observatory, Victoria, B.C

Comet Lore

The Warlord of Mars

Cosmos

Pioneer Saturn Encounter

Einstein and the universe: A popular exposition of the famous theory

The uses of astronomy

The Evolution of Worlds

The Study of Astronomy

Worlds in the making: The evolution of the universe

Voyage To Eternity

The Moon: A Full Description and Map of its Principal Physical Features

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

Mars: Our New Home? – National Plan to Conquer the Red Planet (Official Strategies of NASA & U.S. Congress)