Bell, Book and Candle is a 1958 film starring a good-intentioned witch. The store in The Good Witch was deliberately named after the film as a way to pay homage to it.
The main casting of the movie were well-known by some TV shows: Catherine Bell by JAG (1995), Chris Potter by Kung Fu: The Legend Continues (1993), Catherine Disher by Forever Knight (1992) and Peter McNeill by Captain Power and the Soldiers of the Future (1987).
Paula Boudreau (Nancy) later returns to Good Witch the series as Dottie Davenport.
Chris Potter and Catherine Disher worked together on X-Men The Animated Series.