Well I see I've been wasting valuable time doing other things instead of spending it productively here. Rick, these seem harder. I going to guess Tom Gray.

Art, I assume you are referring to Bessie Lee Mauldin.

Boy, I dunno. #3 could be Bashful Brother Oswald, just a guess. #6 is baking powder or similar ingredient added to Martha White's Self-rising Flour so dough will rise without adding yeast.... "Oh you bake right (ahaaa) with Martha White..." Martha White Mills sponsored the Flat and Scruggs segment of the Grand Ole Opry and I guess some of their road trips as well. The Martha White brand name was painted on their bus. #9 might be the Wilburn Brothers, Leslie, Doyle and Theodore. For #10, I'm guessing Arthur Smith although I'd much rather wait for Spaw to link the story. I like the answers Spaw posted too.

      - Mark