| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Agile Project Management: A Quick Start Beginner's Guide To Mastering Agile Project Management | 978-1-5174-8185-8 (1-5174-8185-6) | 2015 | Henry O'Brien |
| Round Towers of Atlantis | 978-1-931882-01-9 (1-931882-01-0) | 2015 | Henry O'Brien · First Last |
| Round Towers of Ireland Or History of the Tuath De Danaans | 978-0-7661-5925-9 (0-7661-5925-6) | 2003 | Henry O'Brien |
H B · H-O. · Henry B. · Henry O. · O'Brien
Adventures Unlimited Press · CreateSpace Independent Publishing Platform · Kessinger Publishing, LLC