NEW YORK (Standard&Poor's) Dec. 10, 2009--Standard&Poor's Ratings Services assigned its 'AA+' long-term rating, with a stable outlook, to Pennsylvania Housing Finance Agency's (PHFA) series 2009-106A, B, and C ($250 million) and 2009-107 ($604.26 million) single-family mortgage revenue bonds. At the same time, Standard&Poor's affirmed its ratings on all the other series under the parity resolution. The series 107 bonds will be on parity with the series 106 bonds and initially will be issues as escrow bonds in accordance with the New Issue Bond Program (NIPB) being sponsored by Fannie Mae and Freddie Mac. During the initial escrow period, the bonds will be 100% cash collateralized with bond proceeds invested in eligible investments. Under the NIBP