Eleven-year-old knuckleball pitcher Vivy Cohen, who has autism, becomes pen pals with her favorite Major League baseball player after writing a letter to him as an assignment for her social skills class.

As Freddie's seeds grow in the Australian bush, so does his friendship with a secretive pen pal.

"Shortly after Cass's big brother is deployed to fight in Iraq, Cass becomes pen pals with an Iraqi girl who opens up her eyes to the effects of war"--

When fourth-grader Gregory releases a helium-filled balloon into the sky with his name and address attached, it leads to an unusual friendship and an exchange of mystery gifts.

"Jalon Chupp has a past he isn't proud to claim. He's worked hard to overcome his youthful mistakes, and he has recommitted himself to his faith. When he receives a sweet note included in a piece of misdirected mail, he can't help but write back. Soon, the letters he receives from Phoebe are the highlights of his days, and with a hopeful heart, he suggests they meet in person. Phoebe, too, looks forward to every single one of Jalon's letters. Living...

Three female students from Ashbury High write to three male students from rival Brookfield High as part of a pen pal program, leading to romance, humiliation, revenge plots, and war between the schools.

Pen pals Tulsi and Vanessa discover that even though life in their countries--Tanzania and America--is very different, they still have a lot in common.

Some of the kids at Stoneybrook Elementary have pen pals at a school in New Mexico. When word comes that the school in New Mexico has burned down, Dawn decides to organize a fund-raiser for the fire victims, and reward generous givers with a gigantic sleepover.

"Without question, Fawn Birchill knows that her used bookstore is the heart of West Philadelphia, a cornerstone of culture for a community that, for the past twenty years, has found the quirkiness absolutely charming. When an amicable young indie bookseller invades her block, Fawn is convinced that his cushy couches, impressive selection, coffee bar, and knowledgeable staff are a neighborhood blight. Misguided yet blindly resilient, Fawn readies for...

Writing a letter to Earth asking how they can help protect the planet, the students of Room 5 are thrilled by an ensuing year-long correspondence that teaches them how everyday kids can connect with the environment and make a difference.