 Unlike his co-assessors, he never published any Norse sagas, but he hired Icelanders and arranged that they could travel and procure manuscripts for the Board and make copies of them.In 1674–76, he published the old Swedish rhyming chronicles and the rhyming saga of Saint Olaf with extensive commentaries, something which is valuable to posterity, as many of the original manuscripts were destroyed in the Stockholm Palace fire of 1697.He also edited the rhymed romances which bear the name of princess Euphemia.