TRIXIE BELDEN: THE MYSTERY OF THE CASTAWAY CHILDREN. #21.
Edition: Trade paperback. Oval illustration on front cover.
Racine, WI: Golden Press, (1978.). While not as well known as Nancy Drew, this is many girls' favorite series: Trixie is a real girl, with chores, school to attend, a little brother to babysit - but lots of adventures!. ISBN: 0-307-21592x.
Condition: Good overall (usual toning to the pages, creases to front cover, straight spine)