Natchez oral literature has been documented by John R. Swanton and Mary Haas, both of whom worked with Watt Sam in 1907 and the mid 1930s, respectively. Traditionally the Natchez had certain stories that could only be told during the winter time, and many of these stories revolved around the theme of cannibalism. Protagonists in such stories would encounter cannibals, trick cannibals, marry the daughters of cannibals, kill cannibals, and be eaten by cannibals. In these stories Natchez storytellers would employ a special speech register when impersonating the cannibal characters. This register was distinct from ordinary Natchez by substituting several morphemes and words for others.