WASHINGTON --A group of minority broadcasters asked Treasury Secretary Timothy Geithner Monday for financial assistance akin to the aid that has been extended to the financial and auto industries. "Minority-owned broadcasters are close to becoming an extinct species," the letter said. "Even in better economic times, minority broadcasters have historically had difficulties accessing the capital markets." The broadcasters told Mr. Geithner they can bounce back if they are given some temporary assistance while the credit markets are slow. "Unlike the auto business, broadcasting has been healthy for many years," their letter said. The broadcasters appeal follows a proposal sent in...