In 1878, a toy forever changed the lives of Wilbur and Orville. Milton gave the boys a toy helicopter, a simple device made of bamboo, paper, and cork and powered by a rubber band. Wilbur and Orville would later recall that their father’s gift sparked their interest in the science of flight. Wilbur and Orville Wright went from repairing bicycles to inventing the airplane. This Library of Congress primary source set includes photographs, newspapers articles, personal letters and telegrams, and official army documents record their experiences and their experiments.