Primary sources catalogue
| Document Title | Archive |
|---|---|
| Arendal Police Station – 1 | The National Archives of Norway |
| Bergen Police Station / Police District | The National Archives of Norway |
| Letters to and from Nini Roll Anker | National Library of Norway |
| Letters to, from and about Sigrid Undset and her family | National Library of Norway |
| Ragnhild Haakon and Erling Lorentzen. In Copacabana, Rio. Photo taken in connection with a report in Billedbladet NÅ, 1956. | National Archives and Regional State Archives of Oslo |
| Sigrid Undset Archives | National Library of Norway |