We got this one a few days ago!
Written on the back of the postcard:
"Louisiana became the 18th state on April 30, 1812
State Bird: Eastern Brown Pelican
State Flower: Magnolia Blossom
Lowest point: New Orleans (8ft below sea level)
Louisiana was named after the French explorer Sieur de La Salle in 1682 to honor King Louis XIV of France."