Diatriber alerts us of goings-on with Jay Farrar, and while the official Son Volt email tells us the Farrar/Parker side project is called "Gob Iron", Billboard Online seems to think its "Gab Iron".
Featuring at least one Stanley Brothers songs, as well as "Hills of Mexico," a traditional often associated with Woody Guthrie, "Gab Iron" (British slang for harmonica) coalesced just prior to the recording of Son Volt's 2005 album "Okemah and the Melody of Riot."