Notes:
first edition, July 1989
second edition, June 1995 (updated cover)
third edition, April 1999 (15.95 USD; 22.95 CAD)- used for this index
fourth edition, April 2003 (15.95 USD; 22.95 CAD)
fifth edition, August 2007 (issue title "The Wanderer's Road" added starting from this edition)
sixth edition, August 2010
seventh edition, 2014 (16.99 USD)