Quandary Review - "It has something for everyone - puzzles for us adults, and a suitably scary grave-yard and haunted house that the kids will adore." By Rosemary Young. - http://www.quandaryland.com/jsp/dispArticle.jsp?index=39
David Tanguay's Review: King's Quest IV - Rated -3 on -5 to +5 scale. "King's Quest IV is a good program, but the game side falls flat. The spare story doesn't even try to compensate for the haphazard design." - http://www.sentex.net/~datanguayh/games/kq4_rev.html
UHS: King's Quest IV Hints - Universal Hint System hints by Robert Norton. - http://www.uhs-hints.com/uhsweb/kq4.php