12string.com: Resource for players of the 12 string guitar. Primarily framed links to twelve-string resources which include shopping, tunings, and history.
12StringBass.com: Offers descriptions and photos of electric twelve string basses, profiles of players who use them, and interviews.
Jacobs, Neil: Plays music as diverse as Gypsy, World, Balkan folk, jazz, modern classical and fingerstyle on a twelve-string guitar. Includes gig-guide, discography, and profile.
The Origins of Twelve String Power: An article from Acoustic Guitar Magazine (November 1997), tracing the origins and development of the twelve string guitar.
Twelve String Guitar: Dedicated to the preservation, promotion, and enjoyment of 12 string guitar. MP3s, links, featuring various artists.