Can anyone check various City Directories, etc to find out about when the following photographers were in business in Minneapolis: John H. Oleson at 307 Washington Ave S.; John H. Oleson at 228 Washington Ave S.; Larson & Stafford at 313 Washington Ave S. all in Minneapolis. I have several photos of unnamed individuals whose photos were taken at these locations. They were found in a Loberg Family album in northern Minnesota. They may be relatives or close friends who emigrated from Trondheim, Norway in the 1880's but who lived in the Minneapolis area. Any help will be appreciated.