| Article | Vol | Words |
|---|---|---|
| YAKUTSK | 21 | 283 |
| YANG-TSE-KIANG | 21 | 293 |
| YANINA | 21 | 20 |
| YARKAND | 21 | 309 |
| YARMOUTH | 21 | 767 |
| YARRELL | 21 | 400 |
| YELLOW RIVER | 21 | 152 |
| YELLOW SEA | 21 | 87 |
| YENISEISK | 21 | 83 |
| YEOVIL | 21 | 142 |
| YEZD | 21 | 182 |
| YONNE | 21 | 888 |
| YORK | 21 | 1,456 |
| YORKSHIRE | 21 | 5,065 |
| YOUGHAL | 21 | 2,367 |
| YOUNG | 21 | 5,750 |
| YPRES | 21 | 204 |
| YRIARTE | 21 | 292 |
| YRIEIX | 21 | 82 |
| YSSENGEAUX | 21 | 82 |
| YSTAD | 21 | 81 |
| YUCATAN | 21 | 39 |
| YVERDUN | 21 | 145 |
| YVETOT | 21 | 221 |