| Comments | Helpful | |
|---|---|---|
| Konfesije u regionu | 1 | 67% |
| Societies under German Occupation | 0 | 100% |
| U.S. Holocaust Memorial Museum – Collections Search | 0 | 100% |
| Протоколи на Политбюро и на ЦК на БКП (1944–1989) | 0 | 0% |
| Ad fontes | 0 | 0% |
| Войните на България | 0 | 100% |
| Explore your research photos – Tropy | 0 | 100% |
| Arolsen Archives | 0 | 0% |
| Ψηφιακή Πύλη Αρχείων 1922 | 0 | 100% |
| Промяната 1989. Преди и след | 0 | 100% |