How to upgrade my IBM Lenovo ThinkPad R61 in cheaper cost - Quora
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
First Impressions: Lenovo's new 14 inch T61 and R61 Thinkpads
2GB [1x2GB] RAM Memory Upgrade for the IBM Lenovo Thinkpad R61 and R61i Laptops | eBay