Typed letter on letterhead from E. Barrett Prettyman, Jr. to Edward F. Prichard seeking an RSVP for the dinner in honor of Justice Frankfurter planned for 2 February 1957 with the handwritten response of Prichard in pencil.  Dated 14 January 1957, with carbon copy of Prettyman's original letter.  Note that Prettyman misspells Prichard's last name in the letter.