Learn about postal service aboard the Hindenburg and the Titanic, the largest flying and sailing post offices in history.

Learn how mail travels from sender to recipient and how the process has changed over the last 200 years!

This exhibition addresses the emotional importance of mail to troops and their families during wartime and the logistics of delivering mail to troops at war.

This exhibition examines fictional and actual stories from the history of the world's best known mail carriers.

Eleven certified plate proofs for postage stamps issued from 1894 to 1959 honoring Abraham Lincoln are on view in the Philatelic Gallery pullout frames.

This exhibition presents an alphabet of philately through 26 topics, in which each letter stands for some aspect of stamp collecting or the sending of mail.

Portraits of aviator Amelia Earhart tell the story of her career and pay special attention to her work on behalf of women’s rights.

This exhibition spotlights the oldest federal law enforcement agency and its role in fighting crime.

This gallery provides an overview of mail service in America from colonial times through the 19th century, stressing the importance of written communication in the young nation.

This gallery focuses on the modern changes in mail service introduced at the turn of the 20th century.

Faced with the challenge of moving the mail quickly, the postal service looked to trains, automobiles, airplanes, and buses to deliver the mail.

For both the serious collector and those who know little about the renowned hobby of stamp collecting, this gallery highlights some of the best philatic collections in the world.