Burnham's Celestial Handbook: An Observer's Guide to the Universe Beyond the Solar System by Robert Burnham Jr.
The three volume "Burnham's Celestial Handbook" series provides a constellation based, detailed and comprehensive guide to tens of thousands of celestial objects outside our solar system. The information presented includes: definitions, names, historical background, coordinates, classifications, physical descriptions, maps, charts, sketches, and observing guides. All told in an engaging manner.
ISBN: 9780486235677. 652 pp.
Softcover. Very good.