This is hearsay, so don't accept it as "authority" - a friend told me that the "Back Porch Majority" was part of Randy Sparks' endeavours; sort of a "farm team" relationship to the "New Christy Minstrels".

One group I've been able to find absolutely nothing about on the net (including a song called "Time" that I'd love the lyrics & chords for) is the "Poso Seco Singers" (or 'Pozo' perhaps). Anybody got a source for them?