One day, Duncan is happily coloring with his crayons when a stack of postcards arrives in the mail from his former crayons, each of which has run away or been left behind, and all of which want to come home.

Mrs. LaRue takes a cross-country drive with her hospitalized neighbor's cats and her own dog, Ike, who keeps the cats' owner informed of their misadventures through a series of postcards.

Buster goes away for a month, and Arthur becomes sad and confused when he does not receive even one postcard from him.

"I'm not sure what it is about this kid Duncan, but his crayons sure are a colorful bunch of characters! Having soothed the hurt feelings of one group who threatened to quit, Duncan now faces a whole new group of crayons asking to be rescued. From Maroon Crayon, who was lost beneath the sofa cushions and then broken in two after Dad sat on him; to poor Turquoise, whose head is now stuck to one of Duncan's stinky socks after they both ended up in the...

A collection of fictional postcards, written as if by young people visiting the West Indies, describes various sights and life in the islands.

Grandude brightens a dreary weekend for his visiting grandchildren, Lucy, Tom, Em, and Bob, by using his magic compass and postcards to take them on adventures around the world.

A collection of fictional postcards, written as if by young people visiting Vietnam, describe various sights and activities in this South East Asian country.

Brief descriptions of different places in Peru written in the form of postcards.

On his visit to Chicago, Buster makes a friend and sends postcards back home.