The Most Precious Cargo for Lighthouses Across America was a Traveling Library

From the vantage point of a 19th century lighthouse, a small, slow ship would appear every few months on the horizon. A woman, her husband and their children might look out at the glistening sea in anticipation from their tower: the shipment was finally here. They’d haul supplies from the boat; cleaning rags, paint, milk, and possibly the most awaited item: a thick wooden carrying case with brass hinges, filled with books.
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