Links to more declassified documents

Links last checked 26 Feb 2021. New sources are popping up frequently.

SRH is the abbreviation for “Special Research History,” which are compendium and analyses of classified documents. Many time they were used for future planning.


Documents related to the Intelligence War in the European Theatre of Operations at Hyperwar. Scroll down the page.

Many declassified documents at NSA Cryptologic Histories

Documents at the Internet Archive. Many search terms possible including Enigma and Bombe

Extracts from COMMENDATIONS Received By U. S. Naval Communication Intelligence Organization Since 1 January 1942

An index to the large collection at the Naval History and Heritage Command.

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  • DAYTON CODEBREAKERS DOCUMENTARY

    Our documentary aired on American Public Broadcasting from 2006-2018.
    DVDs can be obtained in several ways: If you live in the Dayton area, DVDs are sold at the Museum Store at Carillon Historical Park, and at the book store at the Wright Dunbar Interpretive Center, West Third Street. For special orders, contact Debbie Anderson by Email