IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
CMS 8GB (2X4GB) DDR2 5300 667MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with IBM Lenovo® Thinkpad T61, T61P Ddr2 Pc5300 Sodimm - B116 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) at Amazon.com
Lenovo Thinkpad T61 15.6" Core 2 Duo 2.10GHz 2GB RAM 160GB BLUETOOTH 1680×1050 – ASA College: Florida
Lenovo Thinkpad T61
T61p 4GB RAM Core 2 Duo Lenovo ThinkPad Used 160GB HDD Laptop
8GB (2x4GB) MEMORY RAM FOR IBM Lenovo ThinkPad T61, T61p DDR2 A41 | eBay