Known for its year-round warmth, beautiful beaches and famous residents, Palm Beach County is one of the most well-known areas along Florida's Atlantic coast. And although many people know the county as a winter destination for the likes of starlets and snowbirds, few know that German U-boats sank sixteen ships off the coast in 1942. Nor do they know that eleven barefoot mailmen originally took on the mail service between Palm Beach and Miami. In...