Are you sure harmonic ringing was used in Indeependence and Coffeyville? As far as I can remember they were both always Southwestern Bell towns, and SWBT did not use harmonic ringing at all except perhaps in an exchange recently required from a non-Bell company.
SWBT used divided ringing (ring or tip to ground), which provided for two different parties, divided polarized ringing (+/- ring or +/- tip to ground), which provided for four different parties with none of them hearing the other's ring. Beyond that they usually added codes (one ring, two rings, etc.).
In the 1930s and 1940s I believe Independence and Coffeyville were both manual, and probably had only tip and ring to distinguish parties, the others having codes.
Apropos of another thread, I notice that some Oklahoma organization or state board or agency is having a meeting or session this week in South Coffeyville, Oklahoma.
Wes Leatherock snipped-for-privacy@aol.com snipped-for-privacy@yahoo.com
[TELECOM Digest Editor's Note: Both Independence and C'ville were always SBC towns. C'ville was cut to dial in 1956, Independence was cut to dial in 1961. I have some confusion here since my mother was born in 1922 when her parents lived in _southern Illinois_ in one of the suburbs of St. Louis. Mother said they moved to Coffeyville in 1928. To complicate matters a bit further, one of the small towns east and a bit south of Independence is _not_ SBC but was always in that rural telephone cooperative which is based further east around the Pittsburg, KS area. Grandmother is of course long since dead. But for _some_ small town telephone systems in those days, her story of setting the phone in a galvanized washtub to listen to the 'ringing' of the party-line neighbor is a logical report. Sorry I cannot be more specific. PAT]