| Author | Titles | 1.
| O'Brien, Beth | 10 | 2.
| O'Brien, Carol | 1 | 3.
| O'Brien, Catherine | 1 | 4.
| O'Brien, David | 1 | 5.
| O'Brien, Elaine, 1945- | 1 | 6.
| O'Brien, Gerry | 1 | 7.
| O'Brien, Glenn, 1947-2017 | 5 | 8.
| O'Brien, Gregory | 1 | 9.
| O'Brien, James | 1 | 10.
| O'Brien John, 1944- | 0 | 11.
| Author is: O'Brian, John, 1944- | 3 |
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