| Artist | Titles | 1.
| Hart, William M., 1823-1894, painter. | 355 | 2.
| Hart, William M., 1823-1894, painter. (attributed to) | 6 | 3.
| Hart, William M., 1823-1894, painter. (possibly by) | 1 | 4.
| Hart, William McDougall, 1823-1894, painter. | 0 | 5.
| See: Hart, William M., 1823-1894, painter. | 355 | 6.
| Hart, William, painter. | 3 | 7.
| Hart, William Prior, painter. (attributed to) | 1 | 8.
| Hart, William S., painter. | 2 | 9.
| Hartbronze Foundry Inc., founder. | 0 | 10.
| See: Hartbronze, Inc., founder. | 7 | 11.
| Hartbronze, Inc., founder. | 7 | 12.
| Harte, Kay, designer. | 0 | 13.
| See: Wagenknecht-Harte, Kay, designer. | 1 |
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