Standard&Poor's Ratings Services raised the short-term component of its rating on Pennsylvania Housing Finance Agency's (PHFA) single-family mortgage revenue bonds series 2002-74A and 2002-75A to 'AA+/A-1+' from 'AA+/A-1', due to the substitution of the existing standby bond purchase agreement (SBPA) provided by Lloyds TSB Bank PLC (A+/A-1) with a SBPA provided by Barclays Bank PLC (AA-/A-1+). At the same time, Standard&Poor's affirmed its 'AA+/A-1+' on PHFA's single-family mortgage revenue bonds series 2003-77B and 2003-79B, due to the substitution of the existing SBPA provided by BNP Paribas (AA/A-1+) with a SBPA provided by Barclays Bank PLC (AA-/A-1+). The long-term component of the rating on series 2002-74A, 2002-75A, and 2003-77B is based on the credit strength of the