Kingston ValueRAM DIMM 240-pin – 1066 MHz PC3-8500 Memory Module 6Gb 3 x 2GB DDR3 RAM Kit at Amazon.com
Amazon.com: OWC 4GB PC8500 DDR3 1066MHz SO-DIMM Memory Compatible with Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, and 2009 iMac Models : Everything Else
Apple Memory Module 8GB 1066MHz DDR3 (PC3-8500) - 2x4GB SO-DIMMs at Amazon .com