Simon Wiesenthal Is Dead at 96; Tirelessly Pursued Nazi Fugitives
Simon Wiesenthal, death camp survivor who dedicated life to tracking down fugitive Nazi war criminals, dies at home in Vienna at age 96; Wiesenthal worked for years in cramped office of Jewish Documentation Center in Vienna, collecting and dispersing tips on war criminals through network of informants, government agents, journalists and even former Nazis; he survived hairbreadth escapes from death and two suicide attempts, dedicating life after liberation by American forces to memorializing millions of Jewish and other noncombatant victims by bringing killers to justice; long efforts, including controversial role in hunts for Adolf Eichmann and Josef Mengele, recounted; photos (M)