Ellis L Yochelson ยท Ellis Leon Yochelson
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Charles Doolittle Walcott, Paleontologist | 978-0-87338-599-2 (0-87338-599-3) | 1998 |
| Smithsonian Institution Secretary, Charles Doolittle Walcott | 978-0-87338-680-7 (0-87338-680-9) | 2001 |