Sixteen-year-old Ilse and her older brother Wolf must hone their magical skills to sabotage Hitler's attempt to build an atom bomb and uncover a spy using dark

Sixteen-year-old Ellie Baum time-travels to 1988 East Berlin, where she meets members of an underground guild who use balloons and magic to help people escape o

When Northerner Thaddeus Lowe lands his huge balloon in South Carolina at the beginning of the Civil War, ten-year-old orphan Ridley Jones joins up with him and

As if starting high school weren't bad enough, Reyna Fey has to do so at a new school without her best friends. Reyna's plan is to keep her head down, help her

Rhyming text and illustrations outline the process by which latex is extracted from trees to make balloons.