Santa Clara Valley Fiddlers' Association
The Santa Clara Valley, in Northern California, is known to the world as "Silicon Valley" and the home of many computer and technology companies. It's also the home of an organization that is focused on the other end of the spectrum. The Santa Clara Valley Fiddlers' Association is a non-profit organization dedicated to the preservation of traditional types of American music known as Old Time, Bluegrass and Gospel Music, as played on the Fiddle and other acoustic stringed instruments.
Seeger: Mike Seeger: Music from True Vine
Featuring Mike Seeger, the man who influenced the shape of Traditional Music and helped make Old Time Music what it is today. Jane Smith has compiled a well-designed website which includes sound files, discography, concert dates, Mike's own definition of Old Time Music, and more!
 
Soloman Branch Band
The Solomon Branch Band was formed in September 2000. A five member group that loves to make music,The Solomon Branch Band features folks relatively new to picking and seasoned veterans. Its performance staple is old time dance music.
Southern Folklife Collection Home Page
Published by the University of North Carolina at Chapel Hill. The Southern Folklife Collection on the fourth floor of Wilson Library houses one of the world's largest collections of Southeastern-tradition derived music.
Smithsonian Folkways Recordings
Smithsonian Folkways' website offers all of their titles online. Their catalog includes a great many Old-Time releases, including quite a few new offerings you may not have in your collection. The 2-CD set, "Mountain Music of Kentucky" is one of my new favorites.
Spud Mountain String Band
"Spud Mountain is an old time acoustic country music and dance band operating around Portland, Oregon. Our instrumentation is similar to a bluegrass band, but also can include tuba, tenor banjo and cello. Our repertoire is drawn mostly from commercial country and rural-folk recordings made in the 1920s and 30s and post-war field recordings."
 
Spud Mountain Web Radio Broadcast
"This is a 1/2 hour long pre-recorded weekly streaming audio program that provides an oldtime country-folk music resource for our region (NW Oregon-SW Washington). We will confine the content to music of Canada, the USA, and Mexico. The program is not archived, so be sure to tune in weekly! "
Stefanini, Rafe
Rafe actually has two web sites: one for his violin business and one as an Old-Time Music performer. On the latter you can hear clips from his soon-to-be-released County recording, "Glory on the Big String".

Sugar in the Gourd - Old Time, All the Time!

Hours of Internet-Streaming Old Time Music can be found here!

Swannanoa Gathering Old-Time Week

Old-Time Music & Dance Week at the Swannanoa Gathering (in late July), explores the rich music, dance, singing and storytelling traditions of the southern Appalachian region through a wide range of classes taught by an experienced and supportive staff. The daily Communal Gathering features visits from local Master musicians and singers from western North Carolina, and elsewhere in the Appalachian region. Evening activities will include jam sessions, singing, square and contra dances, concerts.