Center for the Study of Free Reed Instruments: Journal, announcements, archive, and links.
France Harmonica: French harmonica organization. Links, news, boutique, and membership information. In English and French.
HarmonicaClub.com: An online community providing harmonica lessons, songs, tablature, message boards, and chat room. Some areas require membership.
The National Harmonica League: British organization. Support and resources for harmonica players. Harmonica needs, news, performers, and links.
The Society for the Preservation and Advancement of the Harmonica: Large harmonica association. Links to performers and industry resources, information about the group, convention reports, and membership information.