The Carter Brothers & Son side is mostly incomprehensible to me. It seems to consist of 3 couplets, the first - and not the same as posted by Guest above - is repeated several times. The second, the dog couplet, is clear enough:
Had a little dog and his name was Rover When he died, he died all over
The final couplet sounds like:
? gals oh how I love ya ? gals give me chaw tobacca
The Dillards track, cited by Q, has no lyrics. It is part of a 2-tune harmonica solo by Rodney Dillard: 'Taters in Sandy Lane/Gimme Chaw T'Baccer'.