Viking River Cruises coming to the Mississippi River

... is now sailed by two boats: the new 150-passenger Queen of the Mississippi, launched last fall by American Cruise Lines, and the 436-passenger American Queen, built in 1995 and refurbished by the American Queen Steamboat Co. before it returned to ...

http://www.miamiherald.com/2013/08/07/3548033/viking-river-cruises-coming-to.html