A few weeks ago, I inadvertently saw on a Facebook website a video of the Trio performing on the 1975 edition of Jerry Lewis's MDA Telethon. The group consisted of Bob Shane, Roger Gamble, and, I believe, David Peel who also playued the banjo. I also heard long ago on this board that David Peel occasionally filled in with the trio when one of the members was unable to perform a show. Can anyone shed some light on David's appearance with the Trio on this 1975 MDSA show? Thanks.