Great Lakes historian Schumacher (Mighty Fitz: The Wreck of the Edmund Fitzgerald) profiles another nautical tragedy. The Carl D. Bradley, a 638-foot limestone carrier, sank to Lake Michigan's cold bottom 50 years ago this November. Known as the "Queen of the Stone-Carrying Fleet," it was the most expensive wreck in the history of the Great Lakes, totaling $8 million. The human cost was far greater, as many of the 33 deceased lived in one city, the ship's port of Rogers City, Mich.