Which 1960s folk-rock group had hits with "California Dreamin'" and "Monday, Monday"?

What nickname did keyboardist Daryl Dragon use in his 1970s pop duo with his wife, Toni Tennille? Eric Clapton recorded "Layla" in 1970 with a band whose name paired the Dominos with which male name? Which rock singer is backed by the E Street Band? Which singer led the Heartbreakers, whose hits included "American Girl" and "Refugee"? Which Detroit rocker was backed by the Silver Bullet Band? Which trumpeter led the Tijuana Brass, famous for hits like "A Taste of Honey"? Which personification of the U.S. government is said to be an extension of the initials "U.S."? The island of Tobago forms a Caribbean nation together with which larger island?