Book excerpt: Routledge Library Editions: Jung brings together as one set, or individual volumes, a series of previously out-of-print titles, originally published between 1927 and 1993. Covering a variety of areas this set reflects the continued interest in Jung and analytical psychology, showing how Jungian theory can have influence in many walks of life. It provides in one place a number of reference sources from a range of authors, showing the development of Jung’s theories over time.