Buster sends postcards to his friends back home when he and his father go to San Antonio, Texas for the International Accordion Festival.

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.

When his father takes him to visit Boulder, Colorado, Buster sends postcards to his friends back home sharing what he is learning about the Rocky Mountains and rock climbing.

Three mice "borrow" a postcard which is a reproduction of a painting, and from it they learn about color, pattern, line, and shape. Includes instructions for making and sending a postcard.

While in St. Petersburg, Florida, to help clean out his recently-deceased grandmother's house, thirteen-year-old Jason finds an old postcard which leads him on an adventure that blends figures from an old, unfinished detective story with his family's past.

Los crayones que Duncan ha perdido, olvidado en algún lugar durante las vacaciones, abandonado en el patio al calor del sol, tirado en el piso al alcance de su perro o que ha dejado en su bolsillo y han llegado a la lavadora, le escriben cartas para exigirle que los rescate de los apuros en los que se encuentran. Duncan se pone triste por haberlos abandonado y de inmediato pone manos a la obra para recuperarlos a todos y compensar el tiempo perdido. One...

Toot and Puddle are best friends with very different interests, so when Toot spends the year travelling around the world, Puddle enjoys receiving his postcards.

When his father takes him to visit Florida, Buster sends postcards to his friends back home telling them what he is learning about surfing.