TLS signed “Isaac B. Singer,” one page, 7.25 x 11, personal letterhead, December 20, 1966. Singer writes to Mr. Cook, in full: “I was very happy to receive your good letter and the kind words you expressed about my works. Of course I will be happy to autograph the book the moment it comes and to send it back to you. Having readers of your kind and encourages me a great deal. Let me just express my gratitude to you and to wish you and your family a Merry Christmas and a very happy New Year. Myself, I wish, many readers like you.” In fine condition, with some trivial creasing and a faint pencil notation to the left bottom corner. RRAuction COA.