Acknowledgements: I must thank the many people who have contributed to the discovery, documentation, analysis, interpretation, and presentation of 11SA557.

First, thanks to my sons Jacob Stelle, now a student at the University of Illinois, College of Medicine, and Jonathan Stelle, then at the Illinois State Water Survey, who slogged through the rain to lead me to the water fall; assisted in the photo reconnaissance; Jacob, who returned in the summer of 2005 as field supervisor of my student crew; Jonathan, who returned at the end of December for some winter camping and the documentation of the winter solstice; and to both of them for their great contributions to the science involved in unraveling the mystery created when the creek turned to "blood."

Thanks also to Tonie Sadler for her assistance with the photographic work as well as the countless hours she and I spent discussing the possible interpretations of the pictographs. Her scholarship, enthusiasm, and insight were much appreciated. I continue to hope that we do not lose her to ethnography.

Curtis Gray Eagle and Roger Fontana, thanks for providing the cultural insight and spiritual leadership that are central to any success this project may enjoy. Thanks too for being willing to share your knowledge. I think that you taught us all a better way.

Thanks to Jenna Mortensen for her many important additions including the "observe and sketch" drawing and the photomicrographs. Our work was greatly enhanced as a consequence of her efforts.

Thanks also to Ashlie Morfey. Her constantly pleasant disposition would be a most welcome quality in any field school.

Lastly, thanks are extended to Parkland College and its Vice President and chief academic officer, Tom Ramage, for the ongoing support that our research and teaching receives. I believe it to be an unusual, if not unique, expression within the community college system.

Of course, all errors and oversights are exclusively mine.

L.J.S.