Guiley (The Encyclopedia of Ghosts and Spirits, Facts on File, 1992) continues her reporting of the mysterious and unknown by delving into the celestial realm. In this latest entry in the growing number of books on angels (e.g., Angel, A to Z, LJ 11/15/95, and Know Your Angels, Mamre Pr., 1993), Guiley has compiled interdisciplinary angel information in readable citations, taking the reader on a journey into the evolution of the angel in Western thought and exploring the origins of angels, their manifestation in other cultures, and present angel philosophy. Entries rely on the definition of an angel as "a supernatural being who mediates between God and mortals." Significant angels are given full entries or grouped with similar angels with ample cross references, and biographical profiles of mystics and philosophers such as Geoffrey Hodson are also provided. This is a useful addition to the reference collection of any academic or larger public library.-L. Kriz, West Des Moines P.L., Ia.