The U.S. Postal Service yesterday held a ceremony in Adelup unveiling the latest in its "Flags of Our Nation" stamp series, including the Guam flag stamp.
The stamps are arranged alphabetically in strips of 10 and sold in coils of 50.
The first set of 10 stamps in the series was issued June 14, Flag Day.
Four more sets of flag stamps will be issued in 2009 and 2010.