| Author | Titles | | 1.
| Thomas, Georges | 1 | | 2.
| Thomas Gibson Fine Art (Londres, Grã-Bretanha) | 1 | | 3.
| Thomas, Gilda | 2 | | 4.
| Thomas, Gregory | 1 | | 5.
| Thomas, Gwen, 1968- | 1 | | 6.
| Thomas, Gwilym | 1 | | 7.
| Thomas, H. | 1 | | 8.
| Thomas, H. H., 1876-1935 | 4 | | 9.
| Thomas, Helen | 1 | | 10.
| Thomas, Henry, 1878-1952 | 16 |
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