An Oration Delivered at Albany on the 28th of July, 1856
The Substance of Lectures Delivered in 1897 at the Lowell Institute, Boston, Massachusetts
A Romance of the Moon
Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries
Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction.
An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers
With Directions for Practical Experiments and Telescopic Work