PORT OF DUBUQUE, Iowa, March 12 -- The National Mississippi River Museum and Aquarium issued the following news: As the National Mississippi River Museum & Aquarium continues its capital campaign to Preserve the Wonder, the museum's team is sharing why a contribution helps more than just the museum. "The museum directly generates $16 million annually for the greater Dubuque area," said Nate Breitsprecker, Director of Sales & Guest Services, at the National Mississippi River Museum & Aquarium.   more