Useful links
- National Archives (UK)
- National Archives (USA)
- Bundesarchiv (Germany)
- Library and Archives Canada
- National Archives of Australia
- Archives New Zealand
- National Archives and Records Service (South Africa)
- National Archives of Ireland
- British Library Archives and Manuscripts
- Österreichisches Staatsarchiv (Austria)
- Schweizerisches Bundesarchiv (Switzerland)
- NIOD Instituut voor Oorlogs-, Holocaust- en Genocidestudies (Netherlands)
- Israel State Archives
- US Holocaust Museum Archives
- Russian State Military Archive
- Former Osobyi Archive of German Records (RGVA)
- Canadian Security Intelligence Service
- Security Service (UK)
- Secret Intelligence Service (UK)
- Central Intelligence Agency (USA)
- Agentura (Russia)
- Federal Intelligence Service (Germany)
- Military History Research Institute (Germany)
- Ministry of Defence (UK)
- CI Centre
- International Intelligence History Association
- J. Ransom Clark's Bibliography
- Frode's Archives and Resource Links
- Intelligence & Security Encyclopedia
- Informationen über Geheimdienste und Nachrichtendienste
- US and Gehlen
- Royal Historical Society
- Institute of Historical Research
- Chatham House
- The Wellcome Collection
- Churchill College Cambridge Archives
- University College London (UCL) Library
- Middle East Centre Archive, St Antony's College Oxford (MECA)
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