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Book vi: Supplementary Reports on Intelligence Activities Book VI traces the history of intelligence by the federal government from 1776 to 1975. The discussion of the years before World War I includes sections on various American wars, notable persons such as Allen Pinkerton and Lincoln's Secretary of State William Seward, and the creation of the Secret Service. The years between the wars includes discussion of military intelligence agencies, the Bureau of Investigation, and the (first) Red Scare. The post-WWII era, titled the "National Security Colossus" in this report, discusses the blizzard of intelligence agencies created in the early days of what became known as the Cold War. These include various military intelligence agencies, the Atomic Energy Commission, the CIA, and others. Also in this report is a discussion of the history of government information security classification policy.
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