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
A-Tech 2GB Stick for IBM-Lenovo Thinkpad Notebook Series T61 (6457-xxx) T61 (6458-xxx) T61 (6459-xxx) T61 (6460-xxx) T61 (6461-xxx) T61 (6462-xxx) T61 SO-DIMM DDR2 Non-ECC PC2-5300 667MHz RAM Memory at Amazon.com
New! 4GB Module DDR2-667 SODIMM Laptop Memory PC2-5300 for Lenovo ThinkPad T61 at Amazon.com
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
Arch Memory 2GB 200-Pin DDR2 667 MHz So-dimm RAM for Lenovo ThinkPad T61 6465 Series at Amazon.com
Tutorial: How to upgrade ram in a T61 Thinkpad - YouTube
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
Arch Memory 2GB 200-Pin DDR2 667 MHz So-dimm RAM for Lenovo ThinkPad T61 6465 Series at Amazon.com