"Waterlily forms a valuable part of Deloria's legacy, the treasure trove of material preserving the Sioux past that she has bequeathed to us all, Indian and non-Indian alike. Today, fifty years after most of her interviews were recorded, we realize how irreplaceable those records are, and how fortunate we are that Ella Deloria devoted her life to their collection and translation. As more of her writings become published at long last, we can appreciate how splendidly she achieved her life's mission. For above all, Ella Deloria's work of transcription, translation, and cultural interpretation has provided the data and insight from which we can come to understand the Sioux people of the last century in the way that she intended, as fellow human beings."