Sixty-eight rooms adventures

1.

Ruthie thinks nothing exciting will ever happen to her until her sixth-grade class visits the Art Institute of Chicago, where she and her best friend Jack discover a magic key that shrinks them to the size of gerbils and allows them to explore the Thorne Rooms--the collection of sixty-eight miniature rooms from various time periods and places--and discover their secrets.

3.

   Sixth graders Jack and Ruthie return in their third adventure in the Art Institute of Chicago's magical Thorne Rooms! During a school presentation, Ruthie and Jack discover that their classmate Kendra is descended from Phoebe Monroe, the young slave they befriended when they traveled to 19th-century South Carolina. Kendra tells them that long ago her family lost their good name and their business selling herbal remedies when mobsters...