| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Thoreau Centennial: Papers Marking the Observance of the 100th Anniversary of the Death of Henry David Thoreau | 978-O-87395-O15-2 (O-87395-O15-1) | 1964 |
R. H. · R. Harding · W H · W Harding · W R. · W. Roy · Walter H. · Walter Harding · Walter Roy