I had to post this because...it's awesome. I actually found the video on Rosie Grier's website (rosiegrier.com). But the video link I'm putting in here is to youtube. It is all four (Grier, Olsen, Jones, and Lundy) and they are singing "Since Youre Gone" on a show called Shindig in 1965. Rosie is the singer, and is very good by the way, while the other three are in the background doing a Pips kind of routine. It's black-and-white, but so unique.
Here's the link: https://www.youtube.com/watch?feature=player_embedded&v=Hg1C3VfbTKs