Kristian Berge was a Norwegian photographer. As with other sets from Norway, I found these here.
Bondehytta, Nittedal. 1918-20
Bringing home firewood, Erdalen, 1923
En route to Mysusæter from Raphamn, 1913
En route to Store-Standal on board Møringen, 1924
Fagernes railway station, 1921