| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| America's Energy Famine: Its Cause and Cure | 978-0-8061-1669-3 (0-8061-1669-2) | 1980 |
| The Greatest Gamblers: The Epic of American Oil Exploration | 978-0-8061-1654-9 (0-8061-1654-4) | 1980 |
R.K. · R. Knowles · R. S. · R. Sheldon · Ruth K. · Ruth Sheldon · S.K. · S. Knowles