Comment Letter RE Study Regarding Obligations of Brokers, Dealers, and Investment Advisers SEC Release No 34-62577; IA-3058 File No 4-606 From Scott R. Shewan, PIABA President, 2009 To Elizabeth M. Murphy, Secretary, Securities and Exchange Commission Date Fri, 09/03/2010 - 12:00pm Comment Letter Link Study Regarding Obligations of Brokers, Dealers, and Investment Advisers