Norske oldsager i fremmede museerIngvald Martin Undset, Norske Videnskaps-Akademi I Oslo · First published 1878 · Latest edition 2022Open the Tome
Short Guide for the Use of Visitors to the Viking-Ship from GokstadIngvald Martin Undset · First published 1898Open the Tome
Kort beskrivelse af Vikingeskibet fra GokstadIngvald Martin Undset · First published 1891Open the Tome
Indskrifter fra middelalderen i Throndhjems domkirkeIngvald Martin Undset · First published 1888Open the Tome
Das erste Auftreten des Eisens in Nord-EuropaIngvald Martin Undset · First published 1882Open the Tome
