| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Thomas Olivers of Tregynon: The Life of an Early Methodist Preacher | 978-O-948714-O1-6 (O-948714-O1-8) | 1979 |
Thomas Olbricht · Thomas Oliver · Thomas Olivier · Thomas Olivri · Thomas Olver · Tomasz Olbratowski