A-Tech for Apple 6GB Kit (1x2GB 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
apple-history.com / MacBook (Late 2007)
MacBook Pro | Core 2 Duo 2.4 GHz | 15 Inch | Mid 2007 - Techable.com
6GB Memory for 2007-2008 MacBook Pro, MacBook, and iMac