After arriving in the Americas, Christopher Columbus penned a letter about his find to Spain's King Ferdinand, a letter that would later be published to spread the news throughout Europe.

For the fourth time in the past four years, federal agents and attorneys in Delaware have recovered a stolen copy of that historic letter, now worth up to $1.3 million.

The U.S. Attorney’s Office in Delaware and Homeland Security investigators, who specialize in the recovery of stolen rare books and historic artifacts, announced the find this week.

The rare letter, which has been missing for over 40 years since being stolen from a library in Venice, Italy, was found in the hands of a private collector.

"As with the previous letters, strong investigative work and excellent collaboration led authorities to locate the letter," said Kim Reeves of U.S. Attorney’s Office.

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