Astronomy for Dummies - the basics for beginners
From Messier to the NGC - cataloging the deep sky and what's Out There
Comets of the Nineties - three comets that hit the headlines
The Tenth Planet - is it out there somewhere?
Meteorites - their impact on our Earth and on us (3MB .pdf)
The Constellations - myth, history, and the IAU (3MB .pdf)
The Discovery of Neptune - all done by calculation
The 'How To' Series:
#1 - How to set up your equatorial mount (3MB .pdf)