The Merrill Lynch Puttable FLOATs/RITES Trust puttable floating option tax-exempt receipts series PZ-26, relating to Illinois Development Finance Authority retirement housing revenue bonds (Regency Park at Lincolnwood project) 1991 series B, 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 WestLB AG, and the expiration date of the liquidity facility is Feb. 15, 2004.