National Speleological Society · Natl Speleological Society
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Big Bone Cave | 978-1-879961-24-1 (1-879961-24-5) | 2006 |
| Caves of Chattanooga | 978-1-879961-27-2 (1-879961-27-X) | 2007 |
| Cumberland Caverns | 978-0-9615093-4-7 (0-9615093-4-1) | 1989 |
E. M. · E. Matthews · L. E. · L.M. · Larry E · Larry Matthews