Jonas Edward Salk discovered and developed one of the first successful polio vaccines. In 1952 there were 58,000 new cases reported in the U.S. and more than 3,000 deaths. Polio was eliminated from the United States in 1979 and from the Western Hemisphere in 1991.
Amelia Earhart was the first female aviator to fly solo across the Atlantic Ocean. She was one of the first aviators to promote commercial air travel, wrote best-selling books, and was instrumental in the formation of The Ninety-Nines, an organization for female pilots.
America's first railroad. On February 28, 1827, the Baltimore & Ohio Railroad became the first U.S. railway chartered for commercial transport of passengers and freight. The B&O was acquired by the Chesapeake and Ohio Railway in 1963 and is now part of The CSX Corporation.
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Route 66 was established November 11, 1926. It originally ran from Chicago, Illinois, through Missouri, Kansas, Oklahoma, Texas, New Mexico, and Arizona before ending in Santa Monica, California, covering a total of 2,448 miles (3,940 km).
The first McDonald's restaurant was started in 1948 by brothers Maurice (โMacโ) and Richard McDonald in San Bernardino, California. Shown is the third and oldest operating McDonald's restaurant. It was opened August 18, 1953 by Mac and Richard in Downey California.
America's first radio network. NBC, the National Broadcasting Company, was created in 1926 by RCA, Radio Corporation of America. Their first nationwide broadcast was the 1927 Rose Bowl football game from Pasadena.
John F. Kennedyโs heroics during World War II earned him a Navy and Marine Corps Medal and a Purple Heart. He is the only U.S. president to have earned either of those honors. When asked exactly how he became a war hero, Kennedy said, โIt was involuntary. They sunk my boat.โ