Carla Hayden can't wait to open up "the ultimate treasure chest" that is the Library of Congress.
"They have Rosa Parks' pocketbook," said Hayden, who Wednesday will be sworn in as the 14th librarian of Congress — the first woman and first African-American to fill that position.
"They have the letter that Rosa Parks wrote from jail to her parents. They have Abraham Lincoln's life mask — not his death mask, but his life mask. They have the contents of his pocket on the night he was assassinated.
"I'm looking forward to sharing my discoveries with the public."
The awe in Hayden's voice is...