R.D. · Raúl Dorra · Ryle T Dwyer · T. Ryle Dwyer
Gill & Macmillan Ltd · The Mercier Press Ltd
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Big Fellow, Long Fellow: A Joint Biography of Collins and De Valera | 978-0-7171-2943-0 (0-7171-2943-8) | 1999 |
| Michael Collins and the Civil War | 978-1-78117-032-8 (1-78117-032-0) | 2012 |