| Author | Titles | | 1.
| Yvoire, Élisabeth Agius d' | 1 | | 2.
| Yzquierdo Perrín, Ramón | 2 | | 3.
| Yzquirdo Peiró, Ramón | 1 | | 4.
| Yzurdiaga, Fermin, 1903-1981 | 1 | | 5.
| Z. Baker, Dorothy | 1 | | 6.
| Z. L. Darocha (nome de artista) | 0 | | 7.
| Author is: Darocha (nome de artista) | 13 | | 8.
| Z. M., 1952- | 1 | | 9.
| Z., pseud. | 0 | | 10.
| Author is: Gonçalves, António Augusto, 1848-1932 | 6 | | 11.
| Z3 ( Firma de design ) | 1 | | 12.
| Zaar Vergara, Alfonso | 1 |
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