Download or read book The Mystery of the Mixed-Up Zoo written by Gertrude Chandler Warner and published by Turtleback Books. This book was released on 1992-03-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For use in schools and libraries only. When the Boxcar children visit a zoo run by a friend of their grandfather, they discover that someone has switched signs around, shut off the electricity, and drained the water from the seal pond.