9780735823150 | North South Books, September 1, 2010, cover price $16.95

9781593840327 | Parklane Pub, August 30, 2004, cover price $14.99

9781593840303 | Parklane Pub, April 1, 2004, cover price $14.99 | About this edition: After floating up into the sky in a balloon that Sophie built, Felix, Sophie's stuffed rabbit, is off on another fantastic voyage and sends back informative letters from all the interesting places he visits.

9781593840358 | Parklane Pub, September 1, 2003, cover price $14.99 | About this edition: Sophie's old book of fairy tales gives Felix the adventure itch, so she is not surprised when her little bunny friend takes off in his flying suitcase to see the world, sending letters from such places as Dracula's castle in Romania and Shanghai, China.

9781593840341 | Parklane Pub, September 1, 2003, cover price $14.99 | About this edition: Sophie is unhappy when she loses her stuffed rabbit at the airport on the way home from summer vacation, but then she begins receiving letters from him as he visits various places before returning home for Christmas.

9781558598867 | Abbeville Pr, October 1, 1994, cover price $16.95 | About this edition: Sophie is unhappy when she loses her stuffed rabbit at the airport on the way home from summer vacation, but then she begins receiving letters from him as he visits various places before returning home for Christmas.

9781593840365 | Parklane Pub, September 1, 2003, cover price $14.99 | About this edition: After receiving a response to his letter to Santa Claus, Felix ventures off to become Santa's newest little helper, in a book that includes gatefolds, a letter from Santa, and a recipe for Swedish-style saffron rolls.

9780789204523 | Abbeville Pr, October 1, 1998, cover price $19.95 | About this edition: After receiving a response to his letter to Santa Claus, Felix ventures off to become Santa's newest little helper, in a book that includes gatefolds, a letter from Santa, and a hat that children can wear.

9780789207500 | Abbeville Pr, December 1, 2002, cover price $24.95 | About this edition: Sophie's favorite snuggly rabbit Felix comes to the rescue when her family falls sick.

9780789206329 | Abbeville Pr, March 1, 2000, cover price $18.95 | About this edition: Sophie's stuffed rabbit, Felix, disappears at the circus and then sends her letters describing his adventures.

9780789205629 | Abbeville Pr, April 1, 1999, cover price $10.95 | About this edition: Felix demonstrates many ways to tell time as he and Sophie go about their day, in an introduction to time that includes a clock with movable hands

9780789201720 | Abbeville Pr, December 1, 1998, cover price $16.95 | About this edition: Sophie is unhappy when she loses her stuffed rabbit at the airport on the way home from summer vacation, but then she begins receiving letters from him as he visits various places before returning home for Christmas.

9780789203205 | Har/toy edition (Abbeville Pr, February 1, 1997), cover price $12.95 | About this edition: After floating up into the sky in a balloon that Sophie built, Felix, Sophie's stuffed rabbit, is off on another fantastic voyage and sends back informative letters from all the interesting places he visits.

9780789201744 | Abbeville Pr, August 1, 1996, cover price $12.95 | About this edition: Following the organization of "Letters From Felix" and "Felix Travels Back in Time", this book presents activities for each of the places Felix visits.

9780789200716 | Abbeville Pr, October 1, 1995, cover price $12.95 | About this edition: A young dachshund describes how he cares for his human family, even though they don't play with sticks or like interesting smells, and tells how they found him and brought him home when he was abandoned by his previous family because he behaved like a puppyA young dachshund describes how he cares for his human family and tells how they found him and brought him home when he was abandoned by his previous family because he behaved like a puppy

9780789200020 | Abbeville Pr, August 1, 1995, cover price $16.95 | About this edition: Sophie loses her stuffed rabbit at the museum during a class field trip, but then she begins receiving letters from him as he visits various times and places, from the Stone Age to Ancient Greece, the Vikings, and the American Great Plains before contactwith white people.