Here are some links to other barbershop harmony organizations:

International Barbershop Harmony Society	Pioneer District of the Barbershop Harmony Society	Harmony Foundation International (Barbershop Harmony Charities)
International Quartet Champions Association	Pioneer District Quartet Champions Association	Mt. Pleasant Chapter MountainTown Singers
Traverse City Chapter Cherry Capital Chorus	Gratiot County Chapter Midstatesmen Chorus	Sault Ste. Marie, ON Chapter Northland Chorus
Macomb County Chapter Guardians of Harmony	Sweet Adelines, Inc (Ladies Barbershop Harmony)	(Ladies Barbershop Harmony)