Malcolm Boyd (Editor)
Oxford Composer Companions: J. S. Bach. 
Oxford University Press, 1999. First printing. 0198662084  xxv/626 pages.
Volume is bound in black cloth, with bright stamped gilt lettering to spine. Book is as new. Dust jacket, now in mylar cover, displays very light shelfwear.
This volume offers a thematic overview, map of Bach's Germany, a Bach family tree, and appendices containing list of works, text incipits, chronologies and glossary.