On 7 December 1941, Washington sent a message to its Pacific outposts about a potential Japanese attack. All but Pearl Harbor received it in time to prepare. New Information from the archives of George Street, District Manager of RCA-Honolulu, exposes the fatal flaws that resulted in the surprise attack. Operational snafus, collusion, and spies weave a web of misdirection that entangles George Street and his children in one of history's biggest mistakes. Pearl Harbor's Final Warning amends the historical record by presenting unpublished material, including a copy of General Marshall's coded message. Winner of the 2022 Gold Medal for History from the Military Writer's Society of America.