Aksel Andersen

My great-grandmother Julia Andersen and her two younger sisters emigrated from Christiana to New Zealand on the ship Hovding in 1872. I know very little about her background. However, i recently discovered a photograph of a family - husband & wife with young daughter and three sons. The photo was taken at a studio in Boston. Mass. On the reverse an inscription says: Dette Portrait bleu tagen 10 September, 1894 and is signed - Aksel Andersen. Does anyone know about this photo? - or can anyone offer any information /suggestions where i might locate descendants of the family? I can send a copy of the photo by email if you think you can identify the family. P.S. Since first posting this query I have found out that Julia and her sisters did not live in Christiana - they only sailed from there. Their family home was in Eidskog - a small town in Hedmark County.