| September 30, 2020 | Edited by MARC Bot | add ISNI |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| April 12, 2010 | Edited by Open Library Bot | Added photos to author pages. |
| August 29, 2009 | Edited by 77.186.21.230 | Edited without comment. |
| August 28, 2009 | Edited by 77.186.83.34 | Edited without comment. |