| December 18, 2021 | Edited by dcapillae | merge authors |
| September 30, 2020 | Edited by MARC Bot | add ISNI |
| May 16, 2017 | Edited by MARC Bot | merge authors |
| 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. |