Philadelphia and the State of Pennsylvania:

DO YOU KNOW…WHAT big celebration drew nine million people to Philadelphia--in 1875? (Hint: It was another "Philly first.")

WHICH invention dedicated in 1946 at the University of Pennsylvania greatly contributed to the birth of the Information Age? (Hint: The "baby" weighed 30 tons!) Find these answers and more in Cool Stuff Every Kid Should Know™ Arcadia Kids is a new series of fun, colorful, easy-to-read books for children ages 7-11 featuring attention-grabbing cover art, inviting conversational style content, and vivid full-color images of landmarks and geography.