This Autographed Dated 12/26/63 On The Institute For Advanced Study Letterhead 5.5x6.5 Handwritten Letter has been Personally Signed by Robert Oppenheimer. This item is 100% Authentic, it comes slabbed and authenticated by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. Handwritten letter to Dr. Rudolph von Abele, Professor of English at American University, reading in full: ���������Thank you for writing as you did. We all have our vanities, & mine is indeed for the word.���������