| Autor | Títulos | | 1.
| Howard, Deborah | 4 | | 2.
| Howard, Ebenezer | 1 | | 3.
| Howard Gardens Gallery (Cardiff, Grã-Bretanha) | 1 | | 4.
| Howard Hodgkin, 1932-2017 | 0 | | 5.
| Ver: Hodgkin, Howard, 1932-2017 | 11 | | 6.
| Howard, Ian, 1947- | 1 | | 7.
| Howard, Jeremy, 19--?- | 2 | | 8.
| Howard, Jeremy C., 19--?- | 0 | | 9.
| Ver: Howard, Jeremy, 19--?- | 2 | | 10.
| Howard, Jeremy Charles, 19--?- | 0 | | 11.
| Ver: Howard, Jeremy, 19--?- | 2 | | 12.
| Howard, John | 1 | | 13.
| Howard Jr., H. Seymor | 1 |
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