**O.C.** · R. C. · Robert C. · Robert O.
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Ruggles Street: The Life of an American Artist | 978-0-9701846-1-0 (0-9701846-1-1) | 2006 | Craig Caulfield · Melissa L. Hayes |
| The Art of Robert O. Caulfield | 978-0-9701846-0-3 (0-9701846-0-3) | 2000 | |