LAWYER NAMED U.S. PROSECUTOR IN DONOVAN CASE
A New York City lawyer, Leon Silverman, was appointed yesterday as special prosecutor to investigate allegations of corruption against Raymond J. Donovan, the Secretary of Labor. The panel of three Federal judges in Washington that appointed Mr. Silverman also gave him authority to look into whether Mr. Donovan had lied to a Senate confirmation committee and to investigate accusations of any other alleged violations of Federal laws by Mr. Donovan that might develop from the inquiry. At a news conference at his law offices at 1 New York Plaza in Manhattan, Mr. Silverman said he had no timetable for completing the investigation. But he added, ''I feel a sense of urgency, since there may be statutes of limitation and I do not intend to dawdle.''