What is associated with: a cowboy hat a sombrero are worn by this hanna barbera pair who turned 40 in 1999?

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 coward is said to have a yellow one down his bac...', what is the answer? Based on the clue 'a cowardly variety of sapsucker', what is the answer? 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? Based on the clue 'a cowboy who rode his employers range far wide to...', what is the answer? Based on the clue 'a cowgirl in this condition was said to be wearing...', what is the answer?