TRIXIE BELDEN: THE GATEHOUSE MYSTERY, #3.
Edition: Trade paperback - oval cover illustration by Jack Wacker.
Racine, WI: Whitman, (c. 1977.). The format used for the most titles in the series - from #1-34. 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: 0-307-215784.
Condition: Very good- (crease on lower corner of cover and first page, otherwise a tight straight copy.)