Which Hanna-Barbera pair, one in a cowboy hat and one in a sombrero, debuted in 1959?

A cousin to Britain's RAF, what is the RAAF? In September 1974, which former president received a full pardon from his successor? The Upper Peninsula State Fair, first held in 1928, takes place in Escanaba in which state? What name does a woodpecker share with a cowardly person: the "___ sapsucker"? Which U.S. president had the Secret Service code name "Rawhide"? A cow's stomach has how many compartments? What is a crack in the Earth's crust along which rocks have moved called? A "crash" is a group of which large horned mammals?