The word “passport” comes from the French words passer and port, meaning “to leave a port or harbor.” For centuries, travelers received passports from foreign governments, not their own. A passport was a type of “permission slip” to cross borders into a foreign land. George Washington, for example, granted a passport to the foreign ship Amazon during the Revolutionary War so it could deliver supplies to British and German prisoners of war.
The United States has been issuing passports since 1782, but the document has changed significantly in both appearance and function over the centuries, says Arizona State University professor Patrick Bixby, who wrote License to Travel: A Cultural History of the Passport. What started out as “informal” documents issued to diplomats and aristocrats became instruments of national security.
Here are eight surprising facts about the history of the U.S. passport.