| 3. | BCRA Publications | | | A full list of magazines and publications available from the British Cave Research Association. www.bcra.org.uk |
| 4. | Compass Points | | | The Journal of the BCRA Cave Surveying Group www.chaos.org.uk |
| 5. | Roger Brucker Books | | | Information about these books focussing on the exploration of Mammouth Cave and the activities of Floyd Collins. www.rogerbrucker.com |
| 6. | CaveBooks | | | Detailed information on all the books published by this respected caving publisher. No online purchase facility. cave.divetx.org |
| 7. | CRF Newsletter | | | View the quarterly Cave Research Foundation newsletter online. Expedition reports, technical advice and news from this Kentucky based organisation. www.cave-research.org |
| 8. | Picture Postcards of Caves | | | Images and detailed information of postcards from around the world organised by region Guide and reference site for collectors. www.irwin24.fsnet.co.uk |
| 9. | Farrworld Books | | | Available publications from Martyn Farr www.farrworld.co.uk |
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