G.O. · Georg Ortenburg · Georg Ortner · Giorgio Ortona
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Rock Climbing Western Oregon: The Rogue | 978-1-879415-46-1 (1-879415-46-1) | 2005 |
| Rock Climbing Western Oregon: UMPQUA: Rock Climbing the Umpqua | 978-1-879415-44-7 (1-879415-44-5) | 2007 |
| Rock Climbing Western Oregon: WILLAMETTE | 978-1-879415-43-0 (1-879415-43-7) | 2006 |