After finding a compass and clues left by Kallista's father, Leo Babbage, Trenton and Kallista head west aboard their homemade mechanical dragon to search for t

Even though technology and inventions have been outlawed in the mountain city of Cove, in order to save the city Trenton and Kallista must follow a set of myste

Shifting Gears is a richly illustrated exploration of the American era of gear-and-girder technology. From the 1890s to the 1920s machines and structures shaped

Command the galaxy's cutting-edge technologies so sophisticated that they rival magic itself! Outfit yourself with the latest and greatest new weapons, armor, a

The concluding volume of this bestselling series takes readers on a final epic quest to find the source behind how dragons are able to gain supremacy over human