Seventeen years have elapsed since I was in the territory in which the events in the early history of the Rio Grande Pueblos transpired, and twenty-nine years since I first entered the field of research among those Pueblos under the auspices of the Archæological Institute of America. I am now called upon by the Institute to do for the Indians of the Rio Grande villages what I did nearly two decades ago for the Zuñi tribe, namely, to record their documentary history. I shall follow the method emp