Did you know about Henry Morrison Flagler the Standard Oil magnate (partner of John Rockefeller) and developer of the East Coast Florida Railroad which spanned from Florida's mainland to the Florida Keys? He was responsible for the development of several hotels in Florida as well.
In fact, the highway on the now existing bridge between the mainland and the keys was built using the foundations from the original railroad bridge he had built and traveled over it on January 22,1912! He died a year later after a nasty fall down a flight of stairs at 84. He brought commerce and the travel industry to the deep south after the Civil War and he did it as a private citizen!
Unfortunately, the railroad was destroyed in a what would be called a Category 5 hurricane (with 122 mile an hour gusts) today in 1935.
Mike Maurice