A cover signed by President Wilson and carried on the first day of airmail service (May 15, 1918), is auctioned off for $1,000 in New York City. The cover is now in the museum's collections.

Coach Vince Lombardi is born. The Super Bowl trophy was named in his honor. He was commemorated on a stamp in 1997.

Owney, the dog that served as the unofficial mascot of the Railway Mail Service, dies in Toledo, Ohio.

Willard Doremus receives a patent for his mailbox. Tens of thousands of these lamppost mail boxes were used in the 1890s.

Congressional legislation creates the position of chief post office inspector. The department's special agents are all re-named inspectors.

John E. Potter is appointed Postmaster General.

Postal workers begin sorting mail on streetcars in Philadelphia, Pennsylvania. Streetcar mail service began in St. Louis, Missouri in 1892.

James Buchanan, 15th President of the U.S., dies at Wheatland, Pennsylvania. He was commemorated on a stamp in 1938.

Confederate Postmaster General John H. Reagan officially assumes control of the postal service of the Confederate States.