He worked throughout the 1660s and 1670s with his brother - in - law , des Groseilliers , on various trade and exploration voyages into the west of the continent .
Through this adoption , Radisson learned native languages that would later serve him well as an interpreter .
Radisson worked throughout the 1660s and 1670s with Radisson 's brother - in - law , des Groseilliers , on various trade and exploration voyages into the west of the continent .
Through this adoption , Radisson learned native languages that would later serve him well as an interpreter .