Credits and Comments

The space images at the top of each page are from NASA's Galleries. According to NASA's usage guidelines, NASA images are not copyrighted unless marked, and are available for general use.

  

This little alien is available from Free Clip Art by Phillip Martin. You can click the picture to see the full-size image on his site. He states on his site that his clip art is free for non-profit use.

 The WorldCat symbol is from OCLC WorldCat. The shopping cart is from Amazon.com.