From the late 1800s until now, fairy tales have been printed on postcards. "Tales of Wonder: Retelling Fairy Tales through Picture Postcards" examines the influence those postcards had on iconic fairy tale images we know today, like Snow White's blood-red apple and Cinderella's missing slipper.

The author of "Tales of Wonder," Jack Zipes, joined the program with guest host Euan Kerr.

Listen here.