Black rotary telephone labeled Stowger P.A.X. on the dial. The phone was originally used at the Indian Club in Irons, Michigan. PAX stand for "private automatic exchange", indicating that this telephone, was part of a small private network at the club where members in various cottages could call each other on a sort of "party line", but were not connected to the external telephone network. PAXs had several advantages in that they were cheaper and easier to maintain, required no operator, and couldn't make expensive long-distance calls.