Regarding Creek Lullaby. this song was recorded in 1943 By Professor Willard Rhodes. Willard Rhodes was a Professor of music at Columbia University and employed by The Bureau of Indian Affairs to compile a recorded catalouge of Native American Songs. Professor Rhodes recorded a young girl named Margaret singing Creek Lullaby. Margaret attened the Haskell Institue in Lawrence, kansas. According to the Professors notes Margaret's voice "shimmered in the room" The translation, roughly, is
Baby, sleep, sleep, sleep.
Father has gone to find turtle shells.
He said he will return tomorrow.
Baby, sleep, sleep, sleep.
Over three thousands Native American songs are on file at the National Archive and can be traced thru the Library of Congress.