Based on the clue 'a coward is said to have a yellow one down his bac...', what is the answer?

Based on the clue 'a covering for the blade of a knife', what is the answer? Based on the clue 'a cow a round of cheese an ear of corn the state ...', what is the answer? What is associated with: a cow calling contest was among the events in 1928 at this states first upper peninsula state… Based on the clue 'a cow knocking over a candle or something really e...', what is the answer? Based on the clue 'a cowardly variety of sapsucker', what is the answer? What is associated with: a cowboy hat a sombrero are worn by this hanna barbera pair who turned 40 in 1999? What is referred to by 'a cowboy president rawhide'? Based on the clue 'a cowboy who cut a man down shot him if he cut the...', what is the answer?