Boston: Houghton Mifflin, 2006. First edition - Historical fiction for older children.In 1896, fourteen year old Megan is sent on an adventure for the summer with her sister and her family on a steamboat ride up the Mississippi to St. Paul, Minnesota. Includes floorplan of the 'Oh My' and a map of the route. Different cover art (by David Johnson) than on the final book. 233 pp.