T. Harry Williams won a 1970 Pulitzer Prize for his biography of which Louisiana "Kingfish"?

Which 1970 Jackson 5 No. 1 hit warns "Stop! ... may be your own"? In which 1970 film does Rod Steiger play Napoleon in his last battle? "Solitary Man" was the first hit for which singer-songwriter? Which 1970 hit's title could describe a "structure spanning agitated H2O"? Complete the title of Ursula K. Le Guin's novel: "The Left Hand of ___". "(They Long to Be) Close to You" was a 1970 hit for which brother-sister duo? Which William H. Armstrong novel about a coon dog in the Deep South won the 1970 Newbery Medal? "We've Only Just Begun" (1970) and "Calling Occupants of Interplanetary Craft" (1977) were recorded by which duo?