Cunningham Sanitarium, ca. 1920s ID: 3506 | This file appears in: Cunningham Sanitarium The hospital was designed according to the specifications and direction of of hyperbaric treatment specialist Dr. Orval J. Cunningham, a Kansas City physician treating diabetes and cancer with pressurized oxygen. The hyperbaric chamber that was constructed is the largest ever built. Image Courtesy of Cleveland State University. Michael Schwartz Library. Special Collections. Download Original File "Cunningham Sanitarium, ca. 1920s" appears in: Cunningham Sanitarium