 He also had access to de la Gardie's extensive library and made a Swedish verse translation of the history of Alexander the Great, which was published during 1672.In the same year, he joined King Charles XI of Sweden on his Eriksgata through central and southern Sweden during which he was obliged always to be present and explain all the ancient monuments and curiosities that caught the king's attention.He received the whole position and salary as director-general of the Central Board of National Antiquities in 1679, when his co-director professor Olof Verelius was promoted to be the librarian of Uppsala University.