Thomas Jefferson is the 6th card of all the 39 Clues cards.
"When Benjamin Franklin went to Paris, he was joined by two other American Founding Fathers, John Adams and Thomas Jefferson. John Adams wasn't a Cahill and worked hard to represent the United States. Thomas Jefferson was the top American agent for the Janus branch, and he was there to spy on Benjamin Franklin. Jefferson never figured out what Franklin was hiding or where Franklin was hiding it. But Jefferson did learn a lot in Paris. When he returned to America, he redesigned Monticello, his Virginia home. To this day, no tourist is allowed to visit the sky dome he added. One can only wonder what is hidden there."
Top Secret Edit
A letter to the Janus Leadership in 1785 from Thomas Jefferson.
This card, combined with Card 1, Card 2, Card 3, Card 4, and Card 5, forms the Clue Iron Solute.
This card can also be combined with Card 44 and Card 132 to form the Clue Honey.