ALS, one page, 8.5 x 11, personal letterhead, April 15, 2003. Letter to a collector. In part, 'It was improper for President Nixon to dismiss me...I have no idea who was 'Deep Throat.' I used to guess that it was more than one person.' In fine condition. Accompanied by the original mailing envelope, addressed in Cox's hand, with his signature appearing again in the return address area. RRAuction COA.