October 31, 1962
Dear Francis:
Continuously over the past ten years you have awarded all of us, personally, the greatest prize of all -- constant stimulation for our own experiments and thoughts. So it seems a fine thing that a grand award be made to you in return. May I add my own congratulations to those of the world upon your receiving the Nobel Prize? With very best wishes and a great indebtedness, I am,
Most sincerely yours,
Maxine Singer