1907- 1909-1968 1912- 1912-2004 1937- 20thcentury aerospace aircraft american andagriculturalimplementworkersofamerica arthursamuels authors automobileindustryworkers biography childhoodandyouthwolff fathers geoffrey history historyinternationalunion impostorsandimposture juvenileliterature laborleaders laborunions officialsandemployees reuther roy unitedautomobile unitedstates walter wolff youthwolff