R.B. · R.D. · Robert B. · Robert Bingham Downs · Robert D.
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Bear Went over the Mountain | 978-0-02-533430-4 (0-02-533430-1) | 1968 |
| Books that Changed the World | 978-0-451-52928-2 (0-451-52928-6) | 2004 |
| Books that Changed the World: Revised Edition | 978-0-451-62698-1 (0-451-62698-2) | 1956 |