A Child's Introduction to the Night Sky, by Michael Driscoll
Constellations Activity Book (Color and Learn), by Ryan Jacobson
Cosmic Odyssey: How Intrepid Astronomers at Palomar Observatory Changed Our View of the Universe, by Linda Schweizer
Find the Constellations, by H.A. Rey
How I Killed Pluto, and Why It Had It Coming, by Mike Brown
Palomar Mountain (Images of America), by Brad Bailey
Solar System: A Visual Exploration of All the Planets, Moons and Other Heavenly Bodies that Orbit Our Sun, by Marcus Chown
Starfinder: The Complete Beginner's Guide to Exploring the Night Sky
Stars and Planets (Peterson Field Guides), by Jay M. Pasachoff
The Magic School Bus Lost In The Solar System, by Joanna Cole and Bruce Degen
The Perfect Machine: Building the Palomar Telescope, by Ronald Florence
There's No Place Like Space (Cat in the Hat's Learning Library), by Tish Rabe