>I had gone into Oklahoma to track down and correlate one of the many ghost tales which were current among the white settlers, but which had strong Indian corroboration, andโI felt sureโan ultimate Indian source. They were very curious, these open-air ghost tales; and though they sounded flat and prosaic in the mouths of the white people, they had earmarks of linkage with some of the richest and obscurest phases of native mythology. All of them were woven around the vast, lonely, artificial-looking mounds in the western part of the state, and all of them involved apparitions of exceedingly strange aspect and equipment.
