| Artist | Titles | 1.
| Costaggini, Filippo, 1839-1904, painter. | 7 | 2.
| Costagini, Filippo, 1839-1904, painter. | 0 | 3.
| See: Costaggini, Filippo, 1839-1904, painter. | 7 | 4.
| Costagini, Philippo, 1839-1904, painter. | 0 | 5.
| See: Costaggini, Filippo, 1839-1904, painter. | 7 | 6.
| Costan, Chris, sculptor. | 1 | 7.
| Costanzo, Tony, 1948- , sculptor. | 2 | 8.
| Costella, A., painter. | 1 | 9.
| Costello, Eugene, sculptor. | 1 | 10.
| Costello, Mrs., painter. | 2 | 11.
| Costelloe, Robert, sculptor. | 1 | 12.
| Coster, M. A., painter. | 1 |
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