Friend: "No, of course I don't know the phone number of the Smithsonian by heart, what am I, psychic?" Visit the Smithsonian? Setting aside the impracticality.

Friend: "No, of course I don't know the phone number of the Smithsonian by heart, what am I, psychic?" Visit the Smithsonian? Setting aside the impracticality... how do you look up the address?