Archeologists have found the remains of a 19th century quarantine hospital and cemetery on a submerged island in Florida's Dry Tortugas National Park in the Gulf of Mexico. While only one grave has been identified, historical records indicate dozens of people — mostly U.S. soldiers stationed at Fort Jefferson — may have been buried at the site in waters west of Key West, Florida, park officials said in a news release Monday. A group that included park cultural resources staff, the National Park Service’s Submerged Resources Center, the Southeast Archeological Center, and a University of Miami graduate student, made the...