- Great Britain. Central Office of Information. Reference Division1
- Główna Komisja Badania Zbrodni Hitlerowskich w Polsce1
- Haimson, Leopold H.1
- Harpprecht, Klaus1
- Healey, Denis1
- Heckenast, Gusztáv1
- Higgins, Marguerite1
- Hildebrandt, Rainer1
- Hilger, Gustav1
- Historical Archives of the Hungarian State Security1
- Hodgkinson, Harry1
- Hoffman, Jerzy1
- Holovakha, I. P.1
- Holzman, Franklyn D.1
- Horváth, Béla1
- Hyde, Douglas Arnold1
- IAkovlev, B. A.1
- Infeld, Leopold1
- Information Services Department1
- Ingram, James C.1