Student Finds Thomas Jefferson Personal Letter

(CNN) -- In a nondescript conference room tucked inside the library at the University of Delaware, a graduate student found a historian's equivalent to a needle in a haystack.

Amanda Daddona said she discovered a personal letter from Thomas Jefferson amid one of 200 boxes of legal documents, minutes from meetings and day-to-day correspondence of a prominent Delaware family.

"The first thing I recognized was his signature," said Daddona, 22, who is getting her master's degree in history. "It was really, really exciting. I just sat with it for a few minutes and looked it over and savored the moment."

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