The Delta Queen is an American riverboat that started her long career in 1927. She in one of just a small handful of surviving paddle wheelers that have traversed the Mississippi and Ohio Rivers.

The Legend of "Ma" Greene, the First Woman River Boat Pilot

According to River Lore, the riverboat was haunted by the ghost of Mary B. "Ma" Greene, who is the woman who co-founded the Delta Queen Steamboat Company. "Ma" was a avid temperance backer who forbade the sale of liquor aboard the family vessels. "Ma" Green has the distinction of being the first licensed female river boat pilot.

After Ma Green passed away in 1949 a saloon was installed abroad the Delta Queen. Just after the first cocktail was sold, a barge crashed into the Delta Queen shattering the bar. Crew members were amazed when they dislodged the barge and read its name: Captain Mary B. The barge that had crashed into the boat and shattered the bar was named after Ma Greene.