| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Grass Beyond the Mountains: Discovering the Last Great Cattle Frontier on the North American Continent | 978-O-771O-185O-3 (O-771O-185O-9) | 1974 |
E.H. · P.E. · P. H. · R. E. · R. H. · R. P. · Richmond-E · Richmond P. Hobson