| 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. |
| August 31, 2008 | Created by ImportBot | Imported from Talis record |
| 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. |
| August 31, 2008 | Created by ImportBot | Imported from Talis record |