Immerman, Alan M., D.C.
Dr. Alan Immerman collected every available scrap of published scientific evidence issued between 1880 and 1980 that supported Natural Hygiene/Nature Cure. He was the Director of Research for the American Natural Hygiene Society in the 1980s. This material (a seven foot tall stack of photocopies) was then scanned by Dr. Immerman. All these articles are available for free download, organized by topic. This link leads to a short essay by Dr. Immerman explaining how the files came to be and how to make the best use of them, and from there, to the files themselves.