The Baker Art Studio was a Detroit photography studio run by Charles Russell Baker (1855-1932). While the man in the photo remains a mystery, here is some information about the photographer who took his picture.
I found this early to mid 1950s postcard of "Sorenson's" at a local antique store. It shows the downtown of Grayling, Michigan, a city that has been a personal family vacation spot for decades. Do you know what kind of car that is? I do, now.