| December 28, 2022 | Edited by Tom Morris | merge authors |
| September 30, 2020 | Edited by MARC Bot | add ISNI |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| September 14, 2008 | Created by ImportBot | Imported from University of Toronto MARC record. |
| December 28, 2022 | Edited by Tom Morris | merge authors |
| September 30, 2020 | Edited by MARC Bot | add ISNI |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| September 14, 2008 | Created by ImportBot | Imported from University of Toronto MARC record. |