| Subclass D | History (General) |
| Subclass DA | Great Britain |
| Subclass DAW | Central Europe |
| Subclass DB | Austria - Liechtenstein - Hungary - Czechoslovakia |
| Subclass DC | France - Andorra - Monaco |
| Subclass DD | Germany |
| Subclass DE | Greco-Roman World |
| Subclass DF | Greece |
| Subclass DG | Italy - Malta |
| Subclass DH | Low Countries - Benelux Countries |
| Subclass DJ | Netherlands (Holland) |
| Subclass DJK | Eastern Europe (General) |
| Subclass DK | Russia. Soviet Union. Former Soviet Republics - Poland |
| Subclass DL | Northern Europe. Scandinavia |
| Subclass DP | Spain - Portugal |
| Subclass DQ | Switzerland |
| Subclass DR | Balkan Peninsula |
| Subclass DS | Asia |
| Subclass DT | Africa |
| Subclass DU | Oceania (South Seas) |
| Subclass DX | Romanies |
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_d.pdf