Officer In Charge of the partly activated Pearl Harbor Intercept Center on December 7, 1941. New and untrained at the time, when warned of the approach of a large aircraft flight from the north, Tyler presumed it to be the scheduled arrival of six B-17 bombers from the mainland. The radar operators were tracking Japanese planes coming to attack the base. Commemorative cover with a politically incorrect cachet honoring America's retaliation for Pearl Harbor, signed in black ink. Cover also bears a stamped address and a return address of the USS Telamon. In fine condition, with a uniform shade of mild toning, with a few heavier spots at edges. RRAuction COA.