The first polio vaccine, the inactivated polio vaccine was developed by virologist Jonas Salk and was administered by injection. The oral polio vaccine would not be commercially used until 1961.
The magazine would later advertise and sell Hef's "Playboy Pipe," that even had a white rabbit etched on the stem. It sold for $15 in 1968.
The Gold Coast manor that would eventually become the original Playboy Mansion was built in 1899 for the surgeon George Isham and his wife Katherine, who had hosted such figures as Theodore Roosevelt and Rear Admiral Robert Peary.
This period of economic growth is referred to as the Golden Age of American Capitalism. Real per capita income grew at 2.25 percent a year between 1950 and 1970.
Diner's Club, founded in 1950, was the first independent credit card company in the world. The first time the card was used, by the founders at a restaurant, came to be known as the "First Supper."