SOUTHLAKE, TX — Anna Eisen delivered a gift to her 82-year-old father not long ago.It came unexpectedly, as much for her as for him, after years of fruitless searching and long past the point at which everyone assumed the worst about what happened to George Salton’s brother.But there it was on an old government record now displayed on Eisen’s computer — proof that Manek Salzman hadn’t died at the hands of the Nazis. On Dec. 17, 1946, a year and a half after World War II, Salzman had stood before a record-keeper to produce the document that Eisen was now tearfully reading. Salzman did not die with a bullet in his head; he was not gassed and thrown in a pit. He was just one of thousands of displaced Jews trying to find his way in the post-war wasteland of Europe, completely unconnected to his brother.