Valerie Tripp

Valerie Tripp has written many books published by American Girl, including quite a few of the Historical Characters' books as well as several of the Hopscotch Hill School stories.

Felicity Merriman

 * Meet Felicity
 * Felicity Learns a Lesson
 * Felicity's Surprise
 * Happy Birthday, Felicity!
 * Felicity Saves The Day
 * Changes for Felicity
 * Felicity's Short Story Collection

Elizabeth Cole

 * Very Funny, Elizabeth

Josefina Montoya

 * Meet Josefina
 * Josefina Learns a Lesson
 * Josefina's Surprise
 * Happy Birthday, Josefina!
 * Josefina Saves The Day
 * Changes for Josefina
 * Again, Josefina! 1
 * Josefina's Song 1
 * Thanks to Josefina 1
 * Just Josefina 1
 * A Reward for Josefina 1

Samantha Parkington

 * Samantha's Short Story Collection

Nellie O'Malley

 * Nellie's Promise

Kit Kittredge

 * Meet Kit
 * Kit Learns a Lesson
 * Kit's Surprise
 * Happy Birthday, Kit!
 * Kit Saves The Day
 * Changes for Kit
 * Kit's Short Story Collection

Ruthie Smithens

 * Really Truly Ruthie

Molly McIntire

 * Meet Molly
 * Molly Learns a Lesson
 * Molly's Surprise
 * Happy Birthday, Molly!
 * Molly Saves The Day
 * Changes for Molly
 * Molly's Short Story Collection

Emily Bennett

 * Brave Emily

Hopscotch Hill School

 * Good Sport Gwen
 * Lindy's Happy Ending
 * Hallie's Horrible Handwriting
 * Teasing Trouble
 * Thank You, Logan!
 * Bright, Shiny Skylar
 * The Fair-Share Pair
 * The One And Only Delaney

Note
Although she is credited on Amazon with writing all of the stories that make up Josefina's Short Story Collection (Again, Josefina!, Josefina's Song, Thanks to Josefina, Just Josefina and A Reward for Josefina), she is not credited as the author for the entire collection.