Jackson’s own 1870 book, The Gluttony Plague, and its advertising front matter describe him as the discoverer of the Psycho Hygienic method of treating the sick, under which he claimed to have already treated nearly 20,000 persons over the preceding twenty years with the greatest success and without ever giving any of them any medicine. The claim covered disease generally, not any single named condition, and the supporting evidence offered was Jackson’s own patient volume and testimonial, not a controlled outcome study. No source in this bundle documents an outcome study, of any era, testing the sweeping claim; the historical record instead shows the institution’s regimen — diet, exercise, rest, and water applications — was, as Katherine Berdan’s 2015 academic study of the institution records, eventually superseded by “medical advances” once conventional medicine developed treatments the water cure could not offer.