Aesop's Fables are fascinating stories for children of all ages . . . and adults, too. To get a hold of a book of Aesop's Fables, you can download a copy free from iBooks or Google Play or you can just go to this Library of Congress website.
Recently, I read to preschool children, Jerry Pinkney's The Lion & the Mouse. This beautifully illustrated book has no words, so you can "tell" the story in your own words. Children loved it.