| Author | Titles | | 1.
| Hora, Joaquim Alves da | 1 | | 2.
| Hora, Vicente da | 1 | | 3.
| Horace C. Henry Art Gallery (Seattle, Washington) | 0 | | 4.
| Author is: Henry Art Gallery (Seattle, Washington) | 6 | | 5.
| Horace C. Henry Art Gallery (Washington D.C., Estados Unidos) | 0 | | 6.
| Author is: Henry Art Gallery (Washington D.C., Estados Unidos) | 1 | | 7.
| Horácio, 65-8a.C. | 26 | | 8.
| Horácio Novais, Herd. (Firma) | 1 | | 9.
| Horácio, pseud. | 0 | | 10.
| Author is: Rocha Júnior, 1886-1970 | 8 | | 11.
| Author is: Palha, Francisco, 1826-1890 | 9 | | 12.
| Horak, Ruth | 1 | | 13.
| Horan, Elaine Frances, 1926-2014 | 0 | | 14.
| Author is: Sturtevant, Elaine, 1926-2014 | 2 | | 15.
| Horányi, Éva | 1 |
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