2GB Memory RAM Upgrade for the Lenovo Thinkpad R61 Series, T60 Series, T61 Series, X60 Series and X61 Series Laptops (DDR2-667, PC2-5300, SODIMM) at Amazon.com
2GB Memory RAM Upgrade for the Lenovo Thinkpad R61 Series T60 Series T61 Series X60 Series and X61 Series Laptops (DDR2-667 PC2-5300 SODIMM) - Walmart.com
2GB [1x2GB] RAM Memory Upgrade for the IBM Lenovo Thinkpad T61 and T61p Laptops | eBay
Lenovo Thinkpad T61 Tutorial how to Remove & Hard Drive-Upgrade Memory DDR2 667 MHz - YouTube
Lenovo Thinkpad T61 14” Notebook Laptop 7665-AD2
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide