| Author | Titles | | 1.
| Harper, G. Neil | 1 | | 2.
| Harper, J. E. T. | 0 | | 3.
| Author is: Harper, John Ernest Troyte | 2 | | 4.
| Harper, J. Russell | 3 | | 5.
| Harper, James | 1 | | 6.
| Harper, John Ernest Troyte | 2 | | 7.
| Harper, Katherine | 1 | | 8.
| Harper, Prudence Oliver | 4 | | 9.
| Harper, Sandra | 2 | | 10.
| Harpes, Jean | 1 | | 11.
| Harprath, Richard | 1 |
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