Today, many people regard the postal service as an outdated method of notification. However, the U.S. postal service is the only delivery service that reaches every address in the United States. The U.S. Constitution officially established this important institution, which traces its roots back to the Second Continental Congress in 1775. Without the postal service, many people would not be able to receive necessary correspondence. This book explores the history of the U.S. Postal Service and the role of this institution is vital to American daily life. Full-color photographs and a graphic organizer provide students with the tools necessary to make connections beyond the text.