Alan Mays' photos with the keyword: cylinders

For more information, see the full version of this real photo postcard:

For more information, see the full version of this real photo postcard:

An outdated technology (typewriters, record players, etc.) photo for the Vintage Photos Theme Park. A young man wearing a suit and hat stands next to a Edison cylinder phonograph sometime in the 1900s or 1910s. See also a cropped version and a close-up of the Edison phonograph in this real photo postcard:

A medical photo for the Vintage Photos Theme Park. A real photo postcard published by the Grogan Photo Co., Danville, Ill. Postmarked Chicago, Ill., July 13, 1946. " Iron lungs ," a colloquial term for negative pressure ventilators (these medical devices are no longer called "respirators"), were notably used in the 1940s and 1950s to treat polio patients with paralyzed lungs. Fortunately, with the development of vaccines to prevent polio and the development of new types of ventilators and treatments, iron lungs are now used only infrequently.