The flatboat trade also led to a series of cultural and regional exchanges between the North and the South. Many Northern flatboatmen had not seen the Deep South before, and rural farmers of the time generally did not travel. Flatboatmen brought tales of antebellum mansions lining the Mississippi and of the Cajun culture of lower Louisiana. They also brought back exotic foods such as bananas, and animals such as parrots. Abraham Lincoln served as a flatboatman twice, in 1828 and 1831. It was on these journeys that he first witnessed slavery, and in New Orleans he also saw a slave auction firsthand. Lincoln would later recall these journeys as essential in shaping his personal views on slavery and the slave trade.