チベット大蔵経
He did not particularly succeed as a missionary, but conducted several longer travels in Eastern Tibet and became known for collecting Tibetan scripture. Among others, he found a series of written sheets in the ruins of a monastery. Upon returning to Norway in 1923, he donated a 314-volume collection of Tibetan Buddhist canon to the University of Kristiania. The texts particularly pertained to Bön and Nyingma schools of Tibetan Buddhism.