In 1682 the Chevalier de La Salle passed down
the Mississippi River to the Gulf of Mexico. He laid claim to the
Mississippi and all of its tributaries for the King of France on April
9, 1682, and named the area Louisiana in honor of King Louis XIV of
The map on the stamp, issued in 1982 to celebrate the
300th anniversary of La Salleís claim, is based on Henri de Tontiís
map of Louisiana in 1685.