Transportation

Panama-Pacific Exposition
On February 20, 1915, the Panama-Pacific Exposition opened in San Francisco, California.

First Highway Post Office
On February 10, 1941, the first Highway Post Office began service in the United States.

Celebrate the Century Series
On February 3, 1998, the USPS issued the first sheet in the Celebrate the Century Series.

New Jersey Becomes 3rd State
On December 18, 1787, New Jersey became the third state to ratify the Constitution and join the Union.

Birth of Robert Fulton
Engineer and inventor Robert Fulton was born on November 14, 1765, in Little Britain, Lancaster County, Pennsylvania.

Opening of the Erie Canal
On October 26, 1825, the Erie Canal opened, offering a quicker shipping route through New York’s waterways.

Ohio River Canalization Stamp
On October 19, 1929, the U.S. Post Office issued a 2¢ commemorative honoring the canalization of the Ohio River. Improvements on the river allowed for year-round travel and increased trade.

Start of Railway Mail Service
On August 28, 1864, the U.S. Post Office Department created the Railway Mail Service.

San Francisco’s First Cable Car
On August 2, 1873, Clay Street Hill Railroad inaugurated San Francisco’s now-famous cable car system.