| Comments | Helpful | |
|---|---|---|
| Serbische Gefangene des Großen Krieges | 0 | 100% |
| Fabrike radnicima? / Factories to the Workers? | 0 | 67% |
| H-France | 0 | 100% |
| The Berlin Wall – A multimedia history | 0 | 0% |
| Danube Swabian History | 0 | 100% |
| Helmut Walser Smith – Digital maps | 0 | 0% |
| Societies under German Occupation | 0 | 100% |
| The Danube Trade: Sources on Austrian Economic History | 0 | 100% |
| Arolsen Archives | 0 | 0% |
| Ψηφιακή Πύλη Αρχείων 1922 | 0 | 100% |