Koch controversy -- Koch and Semmelweis -- Answering a smear artist -- Treating poliomyelitis with Koch therapy / A. D. Nichols -- Results from using Koch therapy / J. G. Dickie -- Treating leukemia / J. F. Baldor -- Carbonyl therapy / W. F. Koch -- Oxidation catalyst treatments / C. E. Hardy -- History of dairy animal experiments / L. B. Thatcher.