| September 25, 2022 | Edited by Tom Morris | merge authors |
| September 30, 2020 | Edited by MARC Bot | add ISNI |
| May 15, 2017 | Edited by MARC Bot | merge authors |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| November 1, 2008 | Edited by ImportBot | Found a matching The Laurentian Library MARC record |