Newlyweds Justus and Calista Vinton set sail for a 160 day overseas journey from Boston to Burma (which today its Myanmar). They would spend most their married life apart as they determined they could cover more ground by leading two teams. Both knew the Karen language (seen in the copy of this hymnal) and found a great willingness of the Burmese people to hear more of the gospel. Both would die in Burma at different times.