Apple MacBook Pro 13.3" (Mid-2009) Core 2 Duo, 4GB RAM, 160GB HDD – Service Batt – ASA College: Florida
MacBook 6,1 (13-Inch, Late 2009) - Full Information | iGotOffer
How to upgrade the RAM on your 13-inch MacBook Pro
OWC 8 GB (2 X 4GB) ram PC8500 DDR3 1066MHz sodimm 204-pin Memory Upgrade Kit, (OWC8566DDR3S8GP), Compatible with MacBook Pro, MacBook, Mac Mini and iMac at Amazon.com
4GB 2x 2GB Apple MacBook Pro 13 inch Mid 2009 Mid 2010 Late 2009 DDR3 Memory RAM | eBay