SHARON DAVIS was first introduced to Dusty by Martha Reeves, and stayed in touch with her until she died. Their last conversation was about the possibility of a biography, to which Dusty gave her blessing. "Be kind," were her last words on the subject. Formerly the Motown representative in London, Davis wrote for leading music magazines, and her published books include the official history of Motown, and biographies of Marvin Gaye and Stevie Wonder. She also helped Diana Ross research her autobiography.