| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1986 | 978-0-940029-00-2 | Robert H. Ruchhoft | Kentucky's Land of the Arches |
| 1984 | 978-0-940029-01-9 | '' | Backpack Loops and Long Day Trail Hikes in Southern Ohio |
| 1991 | 978-0-940029-02-6 | '' | Exploring North Manitou, South Manitou, High and Garden Islands of the Lake Michigan Archipelago |