year of publication | ISBN | author(s) | title |
---|---|---|---|
1989 | 978-0-9504686-1-7 | John Earl | Northumberland Climbing Guide |
1995 | 978-0-9504686-2-4 | Martin James Cooper | No Nobler County: Celebration of Climbing in Northumberland |
2004 | 978-0-9504686-3-1 | John Earl | Northumberland Climbing Guide: The Definitive Guide to Climbing in Northumberland |
2008 | 978-0-9504686-4-8 | John Earl ยท Steve Crowe | Northumberland Bouldering Guide |