Form letter from Dr. H. Michell DeWerth to names of sick people submitted to him advertising his lexoid treatment for such troubles as rheumatism, nervousness, kidney, bladder and back ailments, etc., Undated, BR. 3768, Box: 3, Folder: 5. Regional history broadsides, 6629. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1943451 Accessed September 02, 2026.