| January 5, 2023 | Edited by Tom Morris | merge authors |
| October 9, 2020 | Edited by MARC Bot | add ISNI |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| September 11, 2008 | Edited by ImportBot | Found a matching record from Oregon Libraries . |
| September 4, 2008 | Edited by RenameBot | fix author name |