British philosopher and mathematician who won the Nobel Prize for Literature in 1950. TLS signed “Russell,” one page, 8 x 5, Plas Penhryn letterhead, April 10, 1965. In part: “Dear Professor Davies, Thank you very much for your letter. It is exceedingly kind of you to go to such trouble and we appreciate it, as does my grand-daughter Lucy. I have given your letter to her so that she may have all the information.” In fine condition, with strip of adhesive residue along top border, faint vertical folds affecting two letters of the signature. R&R COA.