TLS signed “H. G. Rickover,” one page, 8 x 10.5, USS Whale (SSN 638) letterhead, April 16, 1968. Letter to Fern Bernstein at Naval Ship Systems Command. From “at sea” in the North Atlantic, in part: “We are returning from the first sea trials of the USS WHALE (SSN638), our 34th attack type nuclear submarine. The ship completed all tests, including full power operation, both surface and submerged…The new Whale’s primary wartime mission is to destroy enemy submarines. Her comprehensive…computer controlled weapons system…and quietness make her a most effective antisubmarine weapon.” In fine condition. Accompanied by the original mailing envelope. RRAuction COA.