Agora, apresentando os itens 1-7
| Railroad construction workers - Amazon River Region (42) |
| Railroads - Buildings and structures - Amazon River Region (42) |
| Railroads - Rails - Amazon River Region (1) |
| Rios - Amazônia (1) |
| Rivers - Amazon River Region (1) |
| Ruas - Amazônia (1) |
| Runyon, W. K. (1) |
Agora, apresentando os itens 1-7