Commemorative cover, 6.5 x 3.75, with a cachet honoring Kennedy, signed on the front in blue ballpoint by Machinist Mate William Johnston and by Capt. Katsumari Yamashiro, who adds a small diagram of the collision. In fine condition. Accompanied with a copy of a handwritten letter which Yamashiro completely tells the story of that fateful event. RRAuction COA.
