7th in the Vice-Presidential Series.
John C. Calhoun served previously as a US Congressman and Secretary of War, and was VP under John Quincy Adams and Andrew Jackson. He believed in a strong national government and in protective tariffs. Calhoun was called the "Cast-Iron Man" for his ideological rigidity, and his dedication to causes he believed in. He has been called "a public intellectual of the highest order."
The cache may be somewhat of a challenge. Be safe. Have fun!