HarperCollins · Lake Champlain Transportation Co
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Lake Champlain ferryboats | 978-0-9623772-0-4 (0-9623772-0-1) | 1990 |
| Yankee kingdom: Vermont and New Hampshire | 978-0-06-011894-5 (0-06-011894-6) | 1973 |
N. H. · N. Hill · R. H. · R. Hill · R.N. · Ralph H. · Ralph Hill · Ralph N. Hill