The first six books were written by Julie Campbell Tatham, who also wrote the Ginny Gordon series; the stories were then continued by various in-house writers from Western Publishing under the pseudonym Kathryn Kenny.
[2] Beatrix "Trixie" Belden is a young teen living just outside the fictional town of Sleepyside-on-Hudson, in the Hudson Valley area of New York.
She lives at Crabapple Farm, which had been in her family for either three or six generations (this varies between books), with her parents and three brothers, Brian, Mart, and Bobby.
The first book establishes her friendship with lonely, sheltered rich girl Honey Wheeler, whose family has just moved into the Manor House next door.
In 1977 the publisher launched the Trixie Belden Fan Club and issued a lower-priced paperback book format of the series.