| Author | Titles | | 1.
| Ypma, Herbert | 4 | | 2.
| Ypsilon, John | 4 | | 3.
| Ypsilon (nome de artista) | 0 | | 4.
| Author is: Penck, A. R. (nome de artista) | 10 | | 5.
| Yrady, Benito | 1 | | 6.
| Yraola, Fernando Aguirre e | 1 | | 7.
| Yriarte, Charles , 1832-1898 | 6 | | 8.
| Yriarte, Charles Émile, 1832-1898 | 0 | | 9.
| Author is: Yriarte, Charles , 1832-1898 | 6 | | 10.
| Yriarte, Jose de | 1 | | 11.
| Yriarte, Tomas | 1 | | 12.
| Ysla, Nelson Herrera, 1947- | 0 | | 13.
| Author is: Herrera Ysla, Nelson, 1947- | 1 |
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