Morgan Stanley had addedMallory Brooks, a well traveled interest-rate sales veteran, from UBS Warburg to its U.S. interest-rate sales effort in New York. His first day was last Monday and he will report to rate sales chief Dennis Scurletis, according to firm spokesman Mark Lake. He says Brooks, who was not available to comment and did not respond to an e-mail, will be an executive director. It could not be learned whether Brooks will be heading up a cross-rates sales effort, similar to his role at Deutsche Bank, whereby sales pros peddle a variety of mortgage-backed, derivative and Treasury securities to accounts with a multi-sector investment approach.