Virtually free to a good home:
"The Sky" Student Edition from Orion
"Build Your Own Astronomical Telescopes" Web Version from Aluminum Coatings, San Carlos
Both on CD-ROM and neither used. Costs are oh, so resonable: One portriat of the original "George W." ($1.00) to cover my postage (for either or both). Prevents me from throwing away perfectly good astro information. Young, deserving and poor astronomy enthusiasts encouraged to respond!
Clear skies to all!