On August 31, 1957, the US Post Office issued an 8¢ stamp honoring Ramon Magsaysay, the first stamp in a new Champions of Liberty Series. The stamps honor patriots who struggled courageously to protect their homelands from tyranny and further the cause of freedom.
On July 4, 1971, the USPS issued the first stamp in the Bicentennial Series. Over the course of six years, the USPS issued 113 commemorative stamps honoring the 200th anniversary of the American Revolution.
On June 25, 1918, Stock Transfer stamps were approved for use. These stamps showed that the taxes had been paid on the sale or transfer of shares or certificates of stock.
On June 21, 1788, New Hampshire became the ninth state to ratify the United States Constitution. New Hampshire’s approval of the document put the Constitution into effect and officially made it the United States of America’s ninth state.
On June 19, 1934, Congress authorized the use of Silver Tax stamps. These stamps paid the tax on profits from the transfer of silver bullion as a result of the Silver Purchase Act of 1934.
On June 17, 1898, the prized Trans-Mississippi stamps were issued as part of the Trans-Mississippi Exposition in Omaha, Nebraska.
On June 16, 1938, the post office issued a 3¢ Jefferson stamp, which was convincingly counterfeited. In fact, the counterfeits are more valuable than the genuine stamp, which rarely happens!
On June 4, 1979, the USPS issued the first block of four stamps in the American Architecture Series, which honors the evolution of American architecture over the last two centuries.
On June 1, 1990, the USPS issued the first stamp in the Flora and Fauna Series, which was born from plans for a Priority Mail stamp in 1987.