The Merrill Lynch Puttable FLOATs/RITES Trust puttable floating option tax-exempt receipts series PT-1668, relating to Massachusetts Health and Educational Facilities Authority revenue bonds Massachusetts Institute of Technology issue series K, is rated 'AAA/A-1'. The long-term component of the rating is based on the underlying bond. The short-term component of the rating is based on a liquidity guarantee from Merrill Lynch&Co. Inc., and the expiration date of the liquidity facility is Dec. 15, 2003. The Merrill Lynch Puttable FLOATs/RITES Trust residual interest tax-exempt securities receipts series PT-1668, relating to Massachusetts Health and Educational Facilities Authority revenue bonds Massachusetts Institute of Technology issue series K, is rated 'AAA'. The long-term component of the rating is based on the underlying bond.
