On July 4, 1971, the USPS issued the first stamp in the Bicentennial Series, U.S. #1432. The U.S. Bicentennial was a series of celebrations during the mid-1970s that commemorated the historic events leading to America’s independence from Great Britain. Over the course of six years, the USPS issued 113 commemorative stamps honoring the bicentennial. The first stamp in the series, #1432, featured the logo of the American Revolution Bicentennial Commission. Most of the stamps in the series would include this logo or the word “Bicentennial,” though not all of them. Few stamps were issued as part of the series through 1974. Though each of those years there was an issue of a block of four stamps with topics including Colonial craftsmen, Colonial communications, the First Continental Congress, and the Boston Tea Party. Several of these stamps were also issued on July 4 of their respective years.