Dickinson, Terence, and Alan Dyer.The Backyard Astronomer's Guide. 3rd ed. Firefly, 1999. A storehouse of information on equipment, observing techniques, and interesting celestial objects; for the serious amateur.
Gallant, Roy A., and Margaret Sedeen.National Geographic Picture Atlas of Our Universe. National Geographic, 1995. Picture atlas for all ages with more than 325 color photos, paintings, maps, and diagrams.
North, Gerald.Advanced Amateur Astronomy. Cambridge University Press, 1997. Information to help the amateurs with modest experience learn about techniques and good, inexpensive equipment.