| Author | Titles | | 1.
| Redouté, Pierre Joseph, 1759-1840 | 2 | | 2.
| Redpath, Anne, 1895-1965 | 1 | | 3.
| Redshaw, Douglas | 2 | | 4.
| Redslob, Edwin | 3 | | 5.
| Redslob, Gustavus Mauritius | 1 | | 6.
| Redstone, Elias, 1979- | 3 | | 7.
| Redstone, Louis G. | 1 | | 8.
| Redzisz, Kasia | 1 | | 9.
| Rée, Paul Johannes | 1 | | 10.
| Reece, Gordon, 19--?- | 1 |
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