David Hamilton Jackson, a teacher, owner and editor of a newspaper, and a judge from St. Croix who fought for workers' rights, is pictured in 1915 giving a speech in Denmark.
David Hamilton Jackson, a teacher, owner and editor of a newspaper, and a judge from St. Croix who fought for workers’ rights, is pictured in 1915 giving a speech in Denmark. The photo is another example of a primary source used by researchers to understand history. (Image from the Danish Royal Library)