The Mississippi National River and Recreation Area works closely with the Jefferson National Parks Association (JNPA) to provide educational merchandise at the Mississippi River Visitor Center.
The purpose of the JNPA is to "provide quality educational products and related services that enrich public understanding and appreciation of America's national parks, public lands and historic places."
Did You Know?
Under the right conditions, certain freshwater mussel species live for as many as 10 to 100 years. This lifespan is one of the longest for any creature on earth.