I am curious as to why he would have a business card registered there. Also the Rhinelander code for the phone number. Perhaps an agency address.
Rhinelander was just the telephone exchange for that address/area.
It would have been quite common for people to commute into the City, My great-grandfather would have commuted 20 miles (by train) into N.Y.C. but later his commute was almost 40 miles away from work.