American Folklore Society
An association of people who study and communicate knowledge about folklore throughout the world.
http://www.afsnet.org/

Seattle Folklore Society
Aims to preserve and foster awareness and appreciation of folk and traditional arts in the Seattle area.
http://www.seafolklore.org/

Spokane Folklore Society
A non-profit volunteer organization dedicated to the celebration of folk arts, particularly music and dance.
http://www.spokanefolklore.org/